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Stratilová B, Šesták S, Mravec J, Garajová S, Pakanová Z, Vadinová K, Kučerová D, Kozmon S, Schwerdt JG, Shirley N, Stratilová E, Hrmova M. Another building block in the plant cell wall: Barley xyloglucan xyloglucosyl transferases link covalently xyloglucan and anionic oligosaccharides derived from pectin. Plant J 2020; 104:752-767. [PMID: 32799357 DOI: 10.1111/tpj.14964] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 07/17/2020] [Accepted: 07/29/2020] [Indexed: 05/27/2023]
Abstract
We report on the homo- and hetero-transglycosylation activities of the HvXET3 and HvXET4 xyloglucan xyloglucosyl transferases (XET; EC 2.4.1.207) from barley (Hordeum vulgare L.), and the visualisation of these activities in young barley roots using Alexa Fluor 488-labelled oligosaccharides. We discover that these isozymes catalyse the transglycosylation reactions with the chemically defined donor and acceptor substrates, specifically with the xyloglucan donor and the penta-galacturonide [α(1-4)GalAp]5 acceptor - the homogalacturonan (pectin) fragment. This activity is supported by 3D molecular models of HvXET3 and HvXET4 with the docked XXXG donor and [α(1-4)GalAp]5 acceptor substrates at the -4 to +5 subsites in the active sites. Comparative sequence analyses of barley isoforms and seed-localised TmXET6.3 from nasturtium (Tropaeolum majus L.) permitted the engineering of mutants of TmXET6.3 that could catalyse the hetero-transglycosylation reaction with the xyloglucan/[α(1-4)GalAp]5 substrate pair, while wild-type TmXET6.3 lacked this activity. Expression data obtained by real-time quantitative polymerase chain reaction of HvXET transcripts and a clustered heatmap of expression profiles of the gene family revealed that HvXET3 and HvXET6 co-expressed but did not share the monophyletic origin. Conversely, HvXET3 and HvXET4 shared this relationship, when we examined the evolutionary history of 419 glycoside hydrolase 16 family members, spanning monocots, eudicots and a basal Angiosperm. The discovered hetero-transglycosylation activity in HvXET3 and HvXET4 with the xyloglucan/[α(1-4)GalAp]5 substrate pair is discussed against the background of roles of xyloglucan-pectin heteropolymers and how they may participate in spatial patterns of cell wall formation and re-modelling, and affect the structural features of walls.
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Affiliation(s)
- Barbora Stratilová
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, SK-84538, Slovakia
- Faculty of Natural Sciences, Department of Physical and Theoretical Chemistry, Comenius University, Mlynská dolina, Bratislava, SK-842 15, Slovakia
| | - Sergej Šesták
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, SK-84538, Slovakia
| | - Jozef Mravec
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg-C, 1871, Denmark
| | - Soňa Garajová
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, SK-84538, Slovakia
- School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, 5064, Australia
| | - Zuzana Pakanová
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, SK-84538, Slovakia
| | - Kristína Vadinová
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, SK-84538, Slovakia
| | - Danica Kučerová
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, SK-84538, Slovakia
| | - Stanislav Kozmon
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, SK-84538, Slovakia
| | - Julian G Schwerdt
- School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, 5064, Australia
| | - Neil Shirley
- School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, 5064, Australia
| | - Eva Stratilová
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, SK-84538, Slovakia
| | - Maria Hrmova
- School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, 5064, Australia
- School of Life Sciences, Huaiyin Normal University, Huai'an, 223300, China
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Li F, Yang N, Yang Z, Cao W, Zhou Z, Liao X, Sun W, Yuan B. Biomimetic degradability of linear perfluorooctanesulfonate (L-PFOS): Degradation products and pathways. Chemosphere 2020; 259:127502. [PMID: 32650169 DOI: 10.1016/j.chemosphere.2020.127502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 06/16/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
The reductive degradability and decomposition pathways of linear perfluorooctanesulfonate (L-PFOS) were investigated in a biomimetic system consisting of Ti(III)-citrate and Vitamin B12. Biomimetic degradation of L-PFOS could well be described by a first-order exponential decay model. Accompanied by the release of fluoride ion, technical PFOS could not only be transformed to perfluorocarboxylates (PFCAs) and perfluoroalkylsulfonates (PFSAs) with perfluoroalkyl carbon chain length < C8 (thereafter referred as carbon-chain-shortened degradation products), but also be transformed to PFCAs with perfluoroalkyl carbon chain length ≥ C8 (thereafter referred as carbon-chain-lengthened degradation products). Perfluorohexanesulfonate and perfluorotetradecanoate were the most abundant carbon-chain-shortened and -lengthened degradation products of technical PFOS, respectively. Based on the various degradation products detected during biomimetic reduction of linear [1,2,3,4-13C4]-PFOS, the degradation pathways of L-PFOS were proposed as follows: L-PFOS was first reduced to C8F17• radical by cleavage of C-S bond, and then transformed to PFOA through hydrolysis. However, the carbon-chain-shortened products were not generated through the sequential chain-shortening via C8F17• radicals and/or L-PFOS, while the carbon-chain-lengthened products were not formed via C8F17• radicals by stepwise addition of CF2 moiety. In fact, C8F17• radical and/or L-PFOS were further reduced to form CnF2n+1• (n = 1, 2, 3, 4) radicals, and these radicals were chain-lengthened by stepwise addition of C4F8 moiety and eventually transformed to various degradation products via hydrolysis (PFCAs) or combination reaction with sulfonyl hydroxide (PFSAs). All carbon-chain-lengthened chemicals were first reported as the degradation products during the decomposition of L-PFOS, while carbon-chain-shortened compounds were first identified as the biomimetic reduction products of L-PFOS.
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Affiliation(s)
- Fei Li
- Xiamen Engineering & Technology Research Center for Urban Water Environment Planning and Remediation, College of Civil Engineering, Huaqiao University, Xiamen, 361021, China
| | - Ning Yang
- Xiamen Engineering & Technology Research Center for Urban Water Environment Planning and Remediation, College of Civil Engineering, Huaqiao University, Xiamen, 361021, China
| | - Zhimin Yang
- Analytical and Testing Center of Huaqiao University, Xiamen, 361021, China
| | - Wei Cao
- Xiamen Engineering & Technology Research Center for Urban Water Environment Planning and Remediation, College of Civil Engineering, Huaqiao University, Xiamen, 361021, China
| | - Zhenming Zhou
- Xiamen Engineering & Technology Research Center for Urban Water Environment Planning and Remediation, College of Civil Engineering, Huaqiao University, Xiamen, 361021, China
| | - Xiaobin Liao
- Xiamen Engineering & Technology Research Center for Urban Water Environment Planning and Remediation, College of Civil Engineering, Huaqiao University, Xiamen, 361021, China
| | - Wenjie Sun
- Department of Civil and Environmental Engineering, Southern Methodist University, Dallas, TX, 75275, USA.
| | - Baoling Yuan
- Xiamen Engineering & Technology Research Center for Urban Water Environment Planning and Remediation, College of Civil Engineering, Huaqiao University, Xiamen, 361021, China.
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Żukowski K, Kosman J, Juskowiak B. Light-Induced Oxidase Activity of DNAzyme-Modified Quantum Dots. Int J Mol Sci 2020; 21:ijms21218190. [PMID: 33139657 PMCID: PMC7662946 DOI: 10.3390/ijms21218190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/23/2020] [Accepted: 10/30/2020] [Indexed: 11/16/2022] Open
Abstract
Here, we report the synthesis of a quantum dot (QD)-DNA covalent conjugate to be used as an H2O2-free DNAzyme system with oxidase activity. Amino-coupling conjugation was carried out between amino-modified oligonucleotides (CatG4-NH2) and carboxylated quantum dots (CdTe@COOH QDs). The obtained products were characterized by spectroscopic methods (UV-Vis, fluorescence, circular dichroizm (CD), and IR) and the transmission electron microscopy (TEM) technique. A QD-DNA system with a low polydispersity and high stability in aqueous solutions was successfully obtained. The catalytic activity of the QD-DNA conjugate was examined with Amplex Red and ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate)) indicators using reactive oxygen species (ROS) generated by visible light irradiation. The synthesized QD-DNAzyme exhibited enhanced catalytic activity compared with the reference system (a mixture of QDs and DNAzyme). This proved the assumption that the covalent attachment of DNAzyme to the surface of QD resulted in a beneficial effect on its catalytic activity. The results proved that the QD-DNAzyme system can be used for generation of the signal by light irradiation. The light-induced oxidase activity of the conjugate was demonstrated, proving that the QD-DNAzyme system can be useful for the development of new cellular bioassays, e.g., for the determination of oxygen radical scavengers.
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Bacchella C, Brewster JT, Bähring S, Dell’Acqua S, Root HD, Thiabaud GD, Reuther JF, Monzani E, Sessler JL, Casella L. Condition-Dependent Coordination and Peroxidase Activity of Hemin-Aβ Complexes. Molecules 2020; 25:molecules25215044. [PMID: 33143109 PMCID: PMC7662341 DOI: 10.3390/molecules25215044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 01/07/2023] Open
Abstract
The peroxidase activity of hemin-peptide complexes remains a potential factor in oxidative damage relevant to neurodegeneration. Here, we present the effect of temperature, ionic strength, and pH relevant to pathophysiological conditions on the dynamic equilibrium between high-spin and low-spin hemin-Aβ40 constructs. This influence on peroxidase activity was also demonstrated using 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and dopamine (DA) oxidation rate analyses with increasing ratios of Aβ16 and Aβ40 (up to 100 equivalents). Interaction and reactivity studies of aggregated Aβ40-hemin revealed enhanced peroxidase activity versus hemin alone. Comparison of the results obtained using Aβ16 and Aβ40 amyloid beta peptides revealed marked differences and provide insight into the potential effects of hemin-Aβ on neurological disease progression.
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Affiliation(s)
- Chiara Bacchella
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (C.B.); (S.D.); (E.M.)
| | - James T. Brewster
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
| | - Steffen Bähring
- Department of Physics, Chemistry, and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
- Correspondence: (S.B.); (J.L.S.); (L.C.)
| | - Simone Dell’Acqua
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (C.B.); (S.D.); (E.M.)
| | - Harrison D. Root
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
| | - Gregory D. Thiabaud
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
| | - James F. Reuther
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 01854, USA
| | - Enrico Monzani
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (C.B.); (S.D.); (E.M.)
| | - Jonathan L. Sessler
- Department of Chemistry, The University of Texas at Austin, 105 East 24th, Street-Stop A5300, Austin, TX 78712-1224, USA; (J.T.B.II); (H.D.R.); (G.D.T.); (J.F.R.)
- Correspondence: (S.B.); (J.L.S.); (L.C.)
| | - Luigi Casella
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (C.B.); (S.D.); (E.M.)
- Correspondence: (S.B.); (J.L.S.); (L.C.)
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Anbar HS, El-Gamal R, Ullah S, Zaraei SO, Al-Rashida M, Zaib S, Pelletier J, Sévigny J, Iqbal J, El-Gamal MI. Evaluation of sulfonate and sulfamate derivatives possessing benzofuran or benzothiophene nucleus as inhibitors of nucleotide pyrophosphatases/phosphodiesterases and anticancer agents. Bioorg Chem 2020; 104:104305. [PMID: 33017718 DOI: 10.1016/j.bioorg.2020.104305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 09/18/2020] [Accepted: 09/20/2020] [Indexed: 02/04/2023]
Abstract
Ectonucleotidases are a broad family of ectoenzymes that play a crucial role in purinergic cell signaling. Ecto-nucleotide pyrophosphatases/phosphodiesterases (NPPs) belong to this group and are important drug targets. In particular, NPP1 and NPP3 are known to be druggable targets for treatment of impaired calcification disorders (including pathological aortic calcification) and cancer, respectively. In this study, we investigated a series of sulfonate and sulfamate derivatives of benzofuran and benzothiophene as potent and selective inhibitors of NPP1 and NPP3. Compounds 1c, 1g, 1n, and 1s are the most active NPP1 inhibitors (IC50 values in the range 0.12-0.95 µM). Moreover, compounds 1e, 1f, 1j, and 1l are the most potent inhibitors of NPP3 (IC50 ranges from 0.12 to 0.95 µM). Compound 1d, 1f and 1t are highly selective inhibitors of NPP1 over NPP3, whereas compounds 1m and 1s are found to be highly selective towards NPP3 over NPP1. Structure-activity relationship (SAR) study has been discussed in detailed. With the aid of molecular docking studies, a common binding mode of these compounds and suramin (the standard inhibitor) was revealed, where the sulfonate group acts as a cation-binding moiety that comes in close contact with the zinc ion of the active site. Moreover, cytotoxic evaluation against MCF-7 and HT-29 cancer cell lines revealed that compound 1r is the most cytotoxic towards MCF-7 cell line with IC50 value of 0.19 µM. Compound 1r is more potent and selective against cancer cells than normal cells (WI-38) as compared to doxorubicin.
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Affiliation(s)
- Hanan S Anbar
- Department of Clinical Pharmacy and Pharmacotherapeutics, Dubai Pharmacy College for Girls, Dubai 19099, United Arab Emirates
| | - Randa El-Gamal
- Department of Medical Biochemistry, Faculty of Medicine, University of Mansoura, Mansoura 35516, Egypt
| | - Saif Ullah
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Seyed-Omar Zaraei
- Center for Biomaterials, Korea Institute of Science and Technology, PO Box 131, Cheongryang, Seoul 130-650, Republic of Korea; Department of Biomolecular Science, Korea University of Science and Technology, 113 Gwahangno, Yuseong-gu, Daejeon 305-333, Republic of Korea
| | - Mariya Al-Rashida
- Department of Chemistry, Forman Christian College (A Chartered University), Ferozepur Road, Lahore, Pakistan
| | - Sumera Zaib
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Julie Pelletier
- Centre de Recherche du CHU de Québec - Université Laval, Québec, QC G1V 4G2, Canada
| | - Jean Sévigny
- Centre de Recherche du CHU de Québec - Université Laval, Québec, QC G1V 4G2, Canada; Département de microbiologie-infectiologie et d'immunologie, Faculté de Médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Jamshed Iqbal
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan.
| | - Mohammed I El-Gamal
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates; Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates; Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt.
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Mohankumar T, Lalithamba HS, Manigandan K, Muthaiyan A, Elangovan N. DHF-BAHPC molecule exerts ameliorative antioxidant status and reduced cadmium-induced toxicity in zebrafish (Danio rerio) embryos. Environ Toxicol Pharmacol 2020; 79:103425. [PMID: 32470610 DOI: 10.1016/j.etap.2020.103425] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 04/04/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
In this study, we report the antioxidant and antitoxic potential of chemically synthesized 4-oxo-2-phenyl-4H-chromene-7,8-diyl bis((1-amino-2-hydroxypropyl)carbamate) (DHF-BAHPC) compound using in vitro and in vivo assays. The DHF-BAHPC was synthesized by linking 7,8-Dihydroxyflavone (DHF) with two molecules of Fmoc-threonine and characterized by Ultraviolet-visible spectroscopy (UV-vis), Fourier-transform infrared spectroscopy (FT-IR), 1H NMR, 13C NMR and Mass spectrometry (MS). In vitro, antioxidant assay results revealed that DHF-BAHPC has a dose-dependent radical scavenging potential towards DPPH, ABTS, FRAP and H2O2 radicals with an IC50 range of 15.45, 66.27, 25.71, 4.375 μg/mL, respectively. Furthermore DHF-BAHPC treatment significantly altered cadmium (Cd) intoxicated zebrafish embryos by rescuing the developmental changes associated with severe histological and reduced the level of defensive antioxidant activities (SOD, CAT, GPx and GST). The overall results of the present study represented that DHF-BAHPC may be used as a potential drug in redox-based therapeutics.
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Affiliation(s)
- Thangavel Mohankumar
- Department of Biotechnology, School of Biosciences, Periyar University, Salem 636011, Tamil Nadu, India.
| | | | - Krishnan Manigandan
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea.
| | - Arunachalam Muthaiyan
- Division of Mathematics, Physical and Natural Sciences, University of New Mexico, Gallup, NM 87301, USA.
| | - Namasivayam Elangovan
- Department of Biotechnology, School of Biosciences, Periyar University, Salem 636011, Tamil Nadu, India.
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Huang SC, Adhikari S, Brownell JE, Calderwood EF, Chouitar J, D'Amore NR, England DB, Foley K, Harrison SJ, LeRoy PJ, Lok D, Lublinsky A, Ma LT, Menon S, Yang Y, Zhang J, Gould AE. Discovery and optimization of pyrazolopyrimidine sulfamates as ATG7 inhibitors. Bioorg Med Chem 2020; 28:115681. [PMID: 32912429 DOI: 10.1016/j.bmc.2020.115681] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 01/01/2023]
Abstract
Autophagy is postulated to be required by cancer cells to survive periods of metabolic and/or hypoxic stress. ATG7 is the E1 enzyme that is required for activation of Ubl conjugation pathways involved in autophagosome formation. This article describes the design and optimization of pyrazolopyrimidine sulfamate compounds as potent and selective inhibitors of ATG7. Cellular levels of the autophagy markers, LC3B and NBR1, are regulated following treatment with these compounds.
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Affiliation(s)
- Shih-Chung Huang
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States.
| | - Sharmila Adhikari
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - James E Brownell
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Emily F Calderwood
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Jouhara Chouitar
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Natalie Roy D'Amore
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Dylan B England
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Klaudia Foley
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Sean J Harrison
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Patrick J LeRoy
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - David Lok
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Anna Lublinsky
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Li-Ting Ma
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Saurabh Menon
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Yu Yang
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Ji Zhang
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
| | - Alexandra E Gould
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street, Cambridge, MA 02139, United States
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Nishida Y, Kumagai Y, Michiba S, Yasui H, Kishimura H. Efficient Extraction and Antioxidant Capacity of Mycosporine-Like Amino Acids from Red Alga Dulse Palmaria palmata in Japan. Mar Drugs 2020; 18:E502. [PMID: 33008002 PMCID: PMC7599624 DOI: 10.3390/md18100502] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 09/28/2020] [Accepted: 09/28/2020] [Indexed: 12/15/2022] Open
Abstract
Mycosporine-like amino acids (MAAs) are the ultraviolet (UV)-absorbable compounds, which are naturally produced by cyanobacteria and algae. Not only these algae but also marine organisms utilize MAAs to protect their DNA from UV-induced damage. On the other hand, the content of MAAs in algae was changed by the environmental condition and season. In addition to the UV-protected function, the antioxidant capacity of MAAs can apply to the cosmetic sunscreen materials and anti-cancer for human health. In this study, we developed the efficient extraction method of MAAs from red alga dulse in Usujiri (Hokkaido, Japan) and investigated the monthly variation. We also evaluated the antioxidant capacity. We employed the successive extraction method of water and then methanol extraction. Spectrophotometric and HPLC analyses revealed that the yield of MAAs by 6 h water extraction was the highest among the tested conditions, and the content of MAAs in the sample of February was the most (6.930 µmol g-1 dry weight) among the sample from January to May in 2019. Antioxidant capacity of MAAs such as crude MAAs, the purified palythine and porphyra-334 were determined by 2,2'-azinobis(3-ethylbenzothiazoline 6-sulfonic acid) (ABTS) radical scavenging and ferrous reducing power assays in various pH conditions, showing that the highest scavenging activity and reducing power were found at alkaline condition (pH 8.0).
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Affiliation(s)
- Yuki Nishida
- Chair of Marine Chemical Resource Development, Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan; (Y.N.); (S.M.)
| | - Yuya Kumagai
- Laboratory of Marine Chemical Resource Development, Faculty of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan;
| | - Shunta Michiba
- Chair of Marine Chemical Resource Development, Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan; (Y.N.); (S.M.)
| | - Hajime Yasui
- Laboratory of Humans and the Ocean, Faculty of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan;
| | - Hideki Kishimura
- Laboratory of Marine Chemical Resource Development, Faculty of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan;
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Piątczak E, Dybowska M, Płuciennik E, Kośla K, Kolniak-Ostek J, Kalinowska-Lis U. Identification and accumulation of phenolic compounds in the leaves and bark of Salix alba (L.) and their biological potential. Biomolecules 2020; 10:biom10101391. [PMID: 33003576 PMCID: PMC7600001 DOI: 10.3390/biom10101391] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/16/2020] [Accepted: 09/28/2020] [Indexed: 01/08/2023] Open
Abstract
The study examines the phenolic compounds in hydromethanolic extracts of Salix alba (L.) leaves and bark as well as their antioxidant activity and cytotoxic potential. UPLC-PDA-Q/TOF-MS analysis showed a total of 29 phenolic compounds in leaves and 34 in bark. Total phenolic compound content was 5575.96 mg/100 g of dry weight (DW) in leaves and 2330.31 mg/100 g DW in bark. The compounds were identified as derivatives of phenolic acids (seven in leaves and five in bark), flavanols and procyanidins (eight in leaves and 26 in bark) and flavonols (14 in leaves and three in bark). Both extracts exhibited strong antioxidant potential, assessed by radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid (ABTS), but the bark extract was even stronger than the ascorbic acid used as a standard. The cytotoxicity of both extracts was evaluated against human skin fibroblasts and human epidermal keratinocytes cell lines using the Presto Blue cell viability assay. The keratinocytes were more resistant to tested extracts than fibroblasts. The leaf and bark extracts at concentrations which exhibited antioxidant activity were also not toxic against the keratinocyte cell line. Thus, S. alba extracts, especially the leaf extract, offer promise as a nontoxic natural antioxidant, in cosmetic products or herbal medicines, and as a source of bioactive secondary metabolites.
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Affiliation(s)
- Ewelina Piątczak
- Department of Biology and Pharmaceutical Botany, Faculty of Pharmacy, Medical University of Lodz, Muszyńskiego 1, 90-151 Łódź, Poland;
| | - Monika Dybowska
- Department of Cosmetic Raw Materials Chemistry, Faculty of Pharmacy, Medical University of Lodz, Muszyńskiego 1, 90-151 Łódź, Poland;
| | - Elżbieta Płuciennik
- Department of Molecular Carcinogenesis, Medical University of Lodz, Żeligowskiego 7/9, 90-752 Łódź, Poland; (E.P.); (K.K.)
| | - Katarzyna Kośla
- Department of Molecular Carcinogenesis, Medical University of Lodz, Żeligowskiego 7/9, 90-752 Łódź, Poland; (E.P.); (K.K.)
| | - Joanna Kolniak-Ostek
- Department of Fruit, Vegetable and Plant Nutraceuticals Technology, Wroclaw University of Environmental and Life Sciences, Chełmońskiego 37, 51-630 Wrocław, Poland;
| | - Urszula Kalinowska-Lis
- Department of Cosmetic Raw Materials Chemistry, Faculty of Pharmacy, Medical University of Lodz, Muszyńskiego 1, 90-151 Łódź, Poland;
- Correspondence: ; Tel.: +48-422-725-575
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Chang CY, Jin JD, Chang HL, Huang KC, Chiang YF, Hsia SM. Physicochemical and Antioxidative Characteristics of Potato Protein Isolate Hydrolysate. Molecules 2020; 25:molecules25194450. [PMID: 32998236 PMCID: PMC7583958 DOI: 10.3390/molecules25194450] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 09/25/2020] [Accepted: 09/25/2020] [Indexed: 01/08/2023] Open
Abstract
This study investigated the physicochemical characteristics of potato protein isolate hydrolysate (PPIH) and its antioxidant activity. Potato protein isolate (PPI) was hydrolyzed into PPIH by the proteases bromelain, Neutrase, and Flavourzyme. Compared with PPI, the resulting PPIH had a lower molecular weight (MW, from 103.5 to 422.7 Da) and smaller particle size (<50 nm), as well as a higher solubility rate (>70%) under acidic conditions (pH 3–6). PPIH presented good solubility (73%) across the tested pH range of 3–6. As the pH was increased, the zeta potential of PPIH decreased from −7.4 to −21.6. Using the 2,2′-azino-bis-3-ethylbenzthiazoline-6-sulfonic acid (ABTS) radical-scavenging assay, we determined that the half-maximal effective concentration (EC50) values of ascorbic acid, PPIH, and PPI were 0.01, 0.89, and >2.33 mg/mL, respectively. Furthermore, PPIH (50 μg/mL) protected C2C12 cells from H2O2 oxidation significantly better than PPI (10.5% higher viability rate; p < 0.01). These findings demonstrated the possible use of PPIH as an antioxidant in medical applications.
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Affiliation(s)
- Chiung-Yueh Chang
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 110, Taiwan; (C.-Y.C.); (K.-C.H.); (Y.-F.C.)
| | - Jinn-Der Jin
- GeneFerm Biotechnology Co., Ltd., Tainan 741, Taiwan; (J.-D.J.); (H.-L.C.)
| | - Hsiao-Li Chang
- GeneFerm Biotechnology Co., Ltd., Tainan 741, Taiwan; (J.-D.J.); (H.-L.C.)
| | - Ko-Chieh Huang
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 110, Taiwan; (C.-Y.C.); (K.-C.H.); (Y.-F.C.)
| | - Yi-Fen Chiang
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 110, Taiwan; (C.-Y.C.); (K.-C.H.); (Y.-F.C.)
| | - Shih-Min Hsia
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 110, Taiwan; (C.-Y.C.); (K.-C.H.); (Y.-F.C.)
- Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition, Taipei Medical University, Taipei 110, Taiwan
- School of Food and Safety, Taipei Medical University, Taipei 110, Taiwan
- Nutrition Research Center, Taipei Medical University Hospital, Taipei 110, Taiwan
- Correspondence: ; Tel.: +886-2-2736-1661
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Kim S, Ye SH, Adamo A, Orizondo RA, Jo J, Cho SK, Wagner WR. A biostable, anti-fouling zwitterionic polyurethane-urea based on PDMS for use in blood-contacting medical devices. J Mater Chem B 2020; 8:8305-8314. [PMID: 32785384 PMCID: PMC7530005 DOI: 10.1039/d0tb01220c] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Polydimethylsiloxane (PDMS) is commonly used in medical devices because it is non-toxic and stable against oxidative stress. Relatively high blood platelet adhesion and the need for chemical crosslinking through curing, however, limit its utility. In this research, a biostable PDMS-based polyurethane-urea bearing zwitterion sulfobetaine (PDMS-SB-UU) was synthesized for potential use in the fabrication or coating of blood-contacting devices, such as a conduits, artificial lungs, and microfluidic devices. The chemical structure and physical properties of synthesized PDMS-SB-UU were confirmed by 1H-nuclear magnetic resonance (1H-NMR), X-ray diffraction (XRD), and uniaxial stress-strain curve. In vitro stability of PDMS-SB-UU was confirmed against lipase and 30% H2O2 for 8 weeks, and PDMS-SB-UU demonstrated significantly higher resistance to fibrinogen adsorption and platelet deposition compared to control PDMS. Moreover, PDMS-SB-UU showed a lack of hemolysis and cytotoxicity with whole ovine blood and rat vascular smooth muscle cells (rSMCs), respectively. The PDMS-SB-UU was successfully processed into small-diameter (0.80 ± 0.05 mm) conduits by electrospinning and coated onto PDMS- and polypropylene-based blood-contacting biomaterials due to its unique physicochemical characteristics from its soft- and hard- segments.
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Affiliation(s)
- Seungil Kim
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Departments of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sang-Ho Ye
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Departments of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Arianna Adamo
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, 90100 Palermo, Italy
| | - Ryan A Orizondo
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Departments of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA and Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jaehyuk Jo
- Department of Mechanical Engineering & Materials Science, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sung Kwon Cho
- Department of Mechanical Engineering & Materials Science, University of Pittsburgh, Pittsburgh, PA, USA
| | - William R Wagner
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Departments of Surgery, University of Pittsburgh, Pittsburgh, PA, USA and Departments of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA and Departments of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA, USA
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Godlewska K, Pacyga P, Michalak I, Biesiada A, Szumny A, Pachura N, Piszcz U. Field-Scale Evaluation of Botanical Extracts Effect on the Yield, Chemical Composition and Antioxidant Activity of Celeriac ( Apium graveolens L. Var. rapaceum). Molecules 2020; 25:molecules25184212. [PMID: 32937923 PMCID: PMC7571039 DOI: 10.3390/molecules25184212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/04/2020] [Accepted: 09/08/2020] [Indexed: 12/21/2022] Open
Abstract
The use of higher plants for the production of plant growth biostimulants is receiving increased attention among scientists, farmers, investors, consumers and regulators. The aim of the present study was to examine the possibility of converting plants commonly occurring in Europe (St. John's wort, giant goldenrod, common dandelion, red clover, nettle, valerian) into valuable and easy to use bio-products. The biostimulating activity of botanical extracts and their effect on the chemical composition of celeriac were identified. Plant-based extracts, obtained by ultrasound-assisted extraction and mechanical homogenisation, were tested in field trials. It was found that the obtained formulations increased the total yield of leaves rosettes and roots, the dry weight of leaves rosettes and roots, the content of chlorophyll a + b and carotenoids, the greenness index of leaves, the content of vitamin C in leaves and roots. They mostly decreased the content of polyphenols and antioxidant activities in leaves but increased them in roots and conversely affected the nitrates content. Extracts showed a varied impact on the content of micro and macroelements, as well as the composition of volatile compounds and fatty acids in the celeriac biomass. Due to the modulatory properties of the tested products, they may be used successfully in sustainable horticulture.
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Affiliation(s)
- Katarzyna Godlewska
- Department of Horticulture, Faculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 50-363 Wrocław, Poland;
- Correspondence:
| | - Paweł Pacyga
- Department of Mechanics, Machines and Energy Processes, Faculty of Mechanical and Power Engineering, Wrocław University of Science and Technology, 50-370 Wrocław, Poland;
| | - Izabela Michalak
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, 50-372 Wrocław, Poland;
| | - Anita Biesiada
- Department of Horticulture, Faculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 50-363 Wrocław, Poland;
| | - Antoni Szumny
- Department of Chemistry, Faculty of Biotechnology and Food Science, Wrocław University of Environmental and Life Sciences, 50-375 Wrocław, Poland; (A.S.); (N.P.)
| | - Natalia Pachura
- Department of Chemistry, Faculty of Biotechnology and Food Science, Wrocław University of Environmental and Life Sciences, 50-375 Wrocław, Poland; (A.S.); (N.P.)
| | - Urszula Piszcz
- Department of Plant Nutrition, Faculty of Life Sciences and Technology, Wrocław University of Environmental and Life Sciences, 50-357 Wrocław, Poland;
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Hu K, Shi Y, Zhu W, Cai J, Zhao W, Zeng H, Zhang Z, Zhang S. Facile synthesis of magnetic sulfonated covalent organic framework composites for simultaneous dispersive solid-phase extraction and determination of β-agonists and fluoroquinolones in food samples. Food Chem 2020; 339:128079. [PMID: 33152872 DOI: 10.1016/j.foodchem.2020.128079] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 12/20/2022]
Abstract
In this work, an efficient method for the determination of β-agonists and fluoroquinolones was established, based on a mixed-mode sorbent of magnetic sulfonated covalent organic framework composites. By coupling with HPLC-MS/MS, the main factors that affect the extraction procedure were optimized. Under the optimal conditions, the proposed HPLC-MS/MS method was successfully utilized for the extraction of β-agonists and fluoroquinolones in milk and pork meat samples. The method showed good linearities (R2 ≥ 0.9916), and low LOQs of 0.1-0.2 ng g-1 for β-agonists and fluoroquinolones. The adsorption mechanism was investigated with the assistance of quantum chemistry calculation method, and it is worth noting that the sorbent relied mainly on the multiple adsorption mechanisms, including π-π stacking, hydrophobic, electrostatic attraction and hydrogen-bonding interactions. This work not only provides a simple method for the preparation of a mixed-mode sorbent, but also a routine analysis strategy for monitoring the illegal use of β-agonists and fluoroquinolones.
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Affiliation(s)
- Kai Hu
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Yanmei Shi
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Weixia Zhu
- Zhengzhou Customs District, Zhengzhou 450003, China
| | - Junlan Cai
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, China
| | - Wenjie Zhao
- School of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Huahui Zeng
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Zhenqiang Zhang
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Shusheng Zhang
- Center of Advanced Analysis and Computational Science, Key Laboratory of Molecular Sensing and Harmful Substances Detection Technology, Zhengzhou University, Zhengzhou 450001, China
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Kang K, Huang L, Weix DJ. Sulfonate Versus Sulfonate: Nickel and Palladium Multimetallic Cross-Electrophile Coupling of Aryl Triflates with Aryl Tosylates. J Am Chem Soc 2020; 142:10634-10640. [PMID: 32486635 PMCID: PMC7373434 DOI: 10.1021/jacs.0c04670] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
While phenols are frequent and convenient aryl sources in cross-coupling, typically as sulfonate esters, the direct cross-Ullmann coupling of two different sulfonate esters is unknown. We report here a general solution to this challenge catalyzed by a combination of Ni and Pd with Zn reductant and LiBr as an additive. The reaction has broad scope, as demonstrated in 33 examples (65% ± 11% average yield). Mechanistic studies show that Pd strongly prefers the aryl triflate, the Ni catalyst has a small preference for the aryl tosylate, aryl transfer between catalysts is mediated by Zn, and Pd improves yields by consuming arylzinc intermediates.
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Affiliation(s)
- Kai Kang
- University of Wisconsin-Madison, Madison, WI 53706, USA
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Zhang X, Zhang F, Lu Z, Xu Q, Hou C, Wang Z. Coupling Two Sequential Biocatalysts with Close Proximity into Metal-Organic Frameworks for Enhanced Cascade Catalysis. ACS Appl Mater Interfaces 2020; 12:25565-25571. [PMID: 32432846 DOI: 10.1021/acsami.0c04317] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The encapsulation of multiple enzyme/nanoenzyme systems within mental-organic frameworks (MOFs) shows great promise for a myriad of practical applications. Herein, two sequential biocatalysts, oxidase and hemin, were coupled together with close proximity using a bifunctional polymer, poly(1-vinylimidazole) (PVI), and encapsulated into MOFs. As a demonstration of the power of such a protocol, glucose oxidase&PVI-hemin encapsulated in ZIF-8 showed significant enhancement of bioactivity for a cascade reaction compared to its counterpart without PVI. For the colorimetric assay of glucose, it showed a low limit of detection of 0.4 μM (S/N = 3), high selectivity, and excellent stability. Because there are numerous biocatalysts that can readily be coupled and encapsulated into MOFs, a myriad of interesting properties can be simply realized by encapsulating different sequential biocatalysts.
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Affiliation(s)
- Xueli Zhang
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Qingdao University, Qingdao 266071, China
| | - Fan Zhang
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Qingdao University, Qingdao 266071, China
| | - Zan Lu
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Qingdao University, Qingdao 266071, China
| | - Qin Xu
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chuantao Hou
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Qingdao University, Qingdao 266071, China
| | - Zonghua Wang
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Qingdao University, Qingdao 266071, China
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Del Prete S, De Luca V, Nocentini A, Scaloni A, Mastrolorenzo MD, Supuran CT, Capasso C. Anion Inhibition Studies of the Beta-Carbonic Anhydrase from Escherichia coli. Molecules 2020; 25:E2564. [PMID: 32486444 PMCID: PMC7321114 DOI: 10.3390/molecules25112564] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 05/25/2020] [Accepted: 05/28/2020] [Indexed: 12/15/2022] Open
Abstract
The interconversion of CO2 and HCO3- is catalyzed by a superfamily of metalloenzymes, known as carbonic anhydrases (CAs, EC 4.2.1.1), which maintain the equilibrium between dissolved inorganic CO2 and HCO3-. In the genome of Escherichia coli, a Gram-negative bacterium typically colonizing the lower intestine of warm-blooded organisms, the cyn operon gene includes the CynT gene, encoding for a β-CA, and CynS gene, encoding for the cyanase. CynT (β-CA) prevents the depletion of the cellular bicarbonate, which is further used in the reaction catalyzed by cyanase. A second β-CA (CynT2 or Can or yadF), as well as a γ and ι-CAs were also identified in the E. coli genome. CynT2 is essential for bacterial growth at atmospheric CO2 concentration. Here, we characterized the kinetic properties and the anion inhibition profiles of recombinant CynT2. The enzyme showed a good activity for the physiological CO2 hydratase reaction with the following parameters: kcat = 5.3 × 105 s-1 and kcat/KM = of 4.1 × 107 M-1 s-1. Sulfamide, sulfamate, phenylboronic acid, phenylarsonic acid, and diethyldithiocarbamate were the most effective CynT2 inhibitors (KI = 2.5 to 84 µM). The anions allowed for a detailed understanding of the interaction of inhibitors with the amino acid residues surrounding the catalytic pocket of the enzyme and may be used as leads for the design of more efficient and specific inhibitors.
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Affiliation(s)
- Sonia Del Prete
- Institute of Biosciences and Bioresources, CNR, Via Pietro Castellino 111, 80131 Napoli, Italy; (S.D.P.); (V.D.L.)
| | - Viviana De Luca
- Institute of Biosciences and Bioresources, CNR, Via Pietro Castellino 111, 80131 Napoli, Italy; (S.D.P.); (V.D.L.)
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, CNR, Via Argine 1085, 80147 Naples, Italy,
| | - Alessio Nocentini
- Department of Neurofarba, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Via U. Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (A.N.); (M.D.M.)
| | - Andrea Scaloni
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, CNR, Via Argine 1085, 80147 Naples, Italy,
| | - Margaret D. Mastrolorenzo
- Department of Neurofarba, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Via U. Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (A.N.); (M.D.M.)
- University of California, San Diego (UCSD), 3425 Lebon Drive, Unit 918, San Diego, CA 92122, USA
| | - Claudiu T. Supuran
- Department of Neurofarba, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Via U. Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (A.N.); (M.D.M.)
| | - Clemente Capasso
- Institute of Biosciences and Bioresources, CNR, Via Pietro Castellino 111, 80131 Napoli, Italy; (S.D.P.); (V.D.L.)
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Zhou W, He Y, Lei X, Liao L, Fu T, Yuan Y, Huang X, Zou L, Liu Y, Ruan R, Li J. Chemical composition and evaluation of antioxidant activities, antimicrobial, and anti-melanogenesis effect of the essential oils extracted from Dalbergia pinnata (Lour.) Prain. J Ethnopharmacol 2020; 254:112731. [PMID: 32135240 DOI: 10.1016/j.jep.2020.112731] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 02/17/2020] [Accepted: 02/29/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dalbergia pinnata (Lour.) Prain (D. pinnata) is a plant widely distributed in tropical and subtropical regions of Asia, Africa, and the Americas. In humans, it is used in the prevention and treatment of diseases such as respiratory system, digestive system, cardiovascular and cerebrovascular diseases. AIM OF THE STUDY This study was aim to evaluate chemical composition, antioxidant activities, antimicrobial, and anti-melanogenesis properties of Essential oils (EO) from D. pinnata. MATERIALS AND METHODS In this paper, the EO of D. pinnata were extracted using the supercritical CO2 extraction method and purified by molecular distillation. The volatile compounds of EO were characterized using Gas Chromatography-Mass Spectrometer (GC-MS). The antioxidant activities were evaluated by the methods of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, 2, 2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging assays. And two Gram-positive bacteria, three Gram-negative bacteria and a fungus were employed to evaluate the antimicrobial activity. The zebrafish was used as experimental model to evaluate the anti-melanogenesis effect of the EO from D. pinnata. RESULTS The EO of D. pinnata were obtained in a yield of 4.75% (v/w) calculated on dry weight basis. 14 volatile compounds could be detected and the predominant components include elemicin (91.06%), methyl eugenol (3.69%), 4-allyl-2,6-dimethoxyphenol (1.16%), and whiskey lactone (0.55%). The antioxidant assay showed that the EO could scavenge DPPH (IC50 values of 0.038 mg/mL) and ABTS (IC50 value of 0.032 mg/mL) free radical, indicating that the EO had strong antioxidant activity. The results of antimicrobial test showed that Staphylococcus aureus was most sensitive to EO with minimal inhibitory concentration (MIC) of 0.78 μL/mL, followed by Streptococcus pyogenes (6.25 μL/mL) and Candida albicans (12.5 μL/mL). Gram-negative strains, including Escherichia coli, Pseudomonas aeruginosa and Salmonella typhimurium, were slightly affected by the EO. Additionally, EO from D. pinnata could reduce tyrosinase activity and melanin synthesis of zebrafish embryos in dose-dependent manner. And EO exhibited the more obvious anti-melanogenic effect compared with the positive control arbutin at the same dose (30 mg/L). CONCLUSIONS Our results validated the main activities attributed to D. pinnata for its antimicrobial and antioxidant. In addition, the potent inhibitory impacts of EO on the pigmentation provides a theoretical basis for the in-depth study of the EO from D. pinnata and their application in pharmaceutical and cosmetic industries.
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Affiliation(s)
- Wei Zhou
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, 330047, China; Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong, 524001, China
| | - Yunxia He
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong, 524001, China
| | - Xianlu Lei
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong, 524001, China
| | - Liangkun Liao
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong, 524001, China
| | - Tiaokun Fu
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong, 524001, China
| | - Yuan Yuan
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong, 524001, China
| | - Xiaobing Huang
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong, 524001, China
| | - Liqiang Zou
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, 330047, China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, 330047, China.
| | - Roger Ruan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, 330047, China
| | - Jihua Li
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong, 524001, China; Hainan Key Laboratory of Storage & Processing of Fruits and Vegetables, Zhanjiang, Guangdong, 524001, China.
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Elmi A, Spina R, Risler A, Philippot S, Mérito A, Duval RE, Abdoul-latif FM, Laurain-Mattar D. Evaluation of Antioxidant and Antibacterial Activities, Cytotoxicity of Acacia seyal Del Bark Extracts and Isolated Compounds. Molecules 2020; 25:E2392. [PMID: 32455580 PMCID: PMC7288156 DOI: 10.3390/molecules25102392] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/11/2020] [Accepted: 05/13/2020] [Indexed: 11/17/2022] Open
Abstract
Water extract of Acacia seyal bark is used traditionally by the population in Djibouti for its anti-infectious activity. The evaluation of in vitro antibacterial, antioxidant activities and cytotoxicity as well as chemical characterization of Acacia seyal bark water and methanolic extracts were presented. The water extract has a toxicity against the MRC-5 cells at 256 μg/mL while the methanolic extract has a weak toxicity at the same concentration. The methanolic extract has a strong antioxidant activity with half maximal inhibitory concentration (IC50) of 150 ± 2.2 μg/mL using 1-diphenyl-2-picrylhydrazyl (DPPH) and IC50 of 27 ± 1.3 μg/mL using 2,2'-azino-bis 3-ethylbenzthiazoline-6-sulphonic acid (ABTS) radical methods. For ferric reducing/antioxidant power (FRAP) assay, the result is 45.74 ± 5.96 μg Vitamin C Equivalent (VCE)/g of dry weight (DW). The precipitation of tannins from methanol crude extract decreases the MIC from 64 µg/mL to 32 µg/mL against Staphylococcus aureus and Corynebacterium urealyticum. However, the antioxidant activity is higher before tannins precipitation than after (IC50 = 150 µg/mL for methanolic crude extract and 250 µg/mL after tannins precipitation determined by DPPH method). By matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis, the results showed that the condensed tannins consist of two types of catechin and gallocatechin-based oligomers. The fractionation led to the identification of three pure compounds: two flavanols catechin and epicatechin; one triterpene as lupeol; and a mixture of three steroids and one fatty acid: campesterol, stigmasterol, clionasterol, and oleamide.
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Affiliation(s)
- Abdirahman Elmi
- Université de Lorraine, CNRS, L2CM, F-54000 Nancy, France; (A.E.); (R.S.); (A.R.); (S.P.); (R.E.D.)
- Medicinal Research Institute, Centre d’Etudes et de Recherche de Djibouti, IRM-CERD, Route de l’Aéroport, Haramous B.P. 486, Djibouti; (A.M.); (F.M.A.-l.)
| | - Rosella Spina
- Université de Lorraine, CNRS, L2CM, F-54000 Nancy, France; (A.E.); (R.S.); (A.R.); (S.P.); (R.E.D.)
| | - Arnaud Risler
- Université de Lorraine, CNRS, L2CM, F-54000 Nancy, France; (A.E.); (R.S.); (A.R.); (S.P.); (R.E.D.)
| | - Stéphanie Philippot
- Université de Lorraine, CNRS, L2CM, F-54000 Nancy, France; (A.E.); (R.S.); (A.R.); (S.P.); (R.E.D.)
| | - Ali Mérito
- Medicinal Research Institute, Centre d’Etudes et de Recherche de Djibouti, IRM-CERD, Route de l’Aéroport, Haramous B.P. 486, Djibouti; (A.M.); (F.M.A.-l.)
| | - Raphaël E. Duval
- Université de Lorraine, CNRS, L2CM, F-54000 Nancy, France; (A.E.); (R.S.); (A.R.); (S.P.); (R.E.D.)
- ABC Platform, Faculté de Pharmacie, F-54505 Vandoeuvre-lès-Nancy, France
| | - Fatouma Mohamed Abdoul-latif
- Medicinal Research Institute, Centre d’Etudes et de Recherche de Djibouti, IRM-CERD, Route de l’Aéroport, Haramous B.P. 486, Djibouti; (A.M.); (F.M.A.-l.)
| | - Dominique Laurain-Mattar
- Université de Lorraine, CNRS, L2CM, F-54000 Nancy, France; (A.E.); (R.S.); (A.R.); (S.P.); (R.E.D.)
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Jin P, Niu X, Zhang F, Dong K, Dai H, Zhang H, Wang W, Chen H, Chen X. Stable and Reusable Light-Responsive Reduced Covalent Organic Framework (COF-300-AR) as a Oxidase-Mimicking Catalyst for GSH Detection in Cell Lysate. ACS Appl Mater Interfaces 2020; 12:20414-20422. [PMID: 32283916 DOI: 10.1021/acsami.0c01763] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Covalent organic frameworks (COFs), as one of the most significant members of the porous organic frameworks, have been well used in the photocatalysis owing to their outspread π-conjugated framework, high crystallinity and regular pore structure. Herein, after reducing the labile imine-linked COF-300 to the more stable amine-linked COF-300-AR, we for the first time demonstrated that COF-300-AR was the light-responsive oxidase mimic. COF-300-AR exhibited excellent oxidase-mimicking activity under purple light stimulation (λ = 400 nm), which can catalyze the oxidation of classical substrates such as 3,3',5,5'-tetramethylbenzydine (TMB) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) by the formation of •OH and O2•- free radicals in the presence of dissolved oxygen. The COF-300-AR oxidase mimic has outstanding advantages of easy light control, high stability, good reusability, and highly catalytic oxidation capacity and has been applied to detect glutathione (GSH) levels in HL60 cells with good selectivity and high sensitivity. This study will broaden the sensing applications of COFs and offer a promising build block for the construction of artificial enzymes.
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Affiliation(s)
- Peng Jin
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiaoying Niu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Fang Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Kui Dong
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Hongxia Dai
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Huige Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Weifeng Wang
- Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Hongli Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xingguo Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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Missaoui M, D’Antuono I, D’Imperio M, Linsalata V, Boukhchina S, Logrieco AF, Cardinali A. Characterization of Micronutrients, Bioaccessibility and Antioxidant Activity of Prickly Pear Cladodes as Functional Ingredient. Molecules 2020; 25:molecules25092176. [PMID: 32384787 PMCID: PMC7248772 DOI: 10.3390/molecules25092176] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/01/2020] [Accepted: 05/04/2020] [Indexed: 12/20/2022] Open
Abstract
The Opuntia ficus indica (L.) (OFI) is used as a nutritional and pharmaceutical agent in various dietary and value added products. This study underlines the possible use of native prickly pear cladode powder as a functional ingredient for health-promoting food production. To summarise, chemical characterization of polyphenols, minerals and soluble dietary fibre was performed; furthermore, the antioxidant activity and bioaccessibility of polyphenols and minerals were assessed. Eleven compounds between phenolic acids and flavonoids were identified, with piscidic acid and isorhamnetin derivatives being the most abundant. Opuntia’s dietary fibre was mainly constituted of mucilage and pectin, and was composed of arabinose, galactose, glucose, mannose, rhamnose, and xylose sugars. The polyphenols’ bioaccessibility was very high: piscidic acid at 200%, eucomic and ferulic acids >110% and flavonoids from 89% to 100%. The prickly pear cladode powder is also a source of minerals, as cations (calcium, sodium, potassium and magnesium) and anions (sulphate and chloride), with high magnesium bioaccessibilty (93%). OFI powder showed good capacity of radical scavenging measured by DPPH and ABTS methods, with 740 and 775 μmol Trolox/100 g OFI, respectively. Finally, the presented results allow the consideration of this natural product as a source of several essential nutrients, with a possible use in the food industry as a functional ingredient.
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Affiliation(s)
- Meriam Missaoui
- Laboratory of Neurophysiology, Cellular Physiopathology and Biomolecules Valorization, Faculty of Science of Tunis, University Tunis El Manar, LR18ES03, Tunis 2092, Tunisia; (M.M.); (S.B.)
| | - Isabella D’Antuono
- Institute of Sciences of Food Production (ISPA), National Council of Research (CNR), 70126 Bari, Italy; (M.D.); (V.L.); (A.F.L.); (A.C.)
- Correspondence: ; Tel.: +39-080-5929303; Fax: +39-080-5929374
| | - Massimiliano D’Imperio
- Institute of Sciences of Food Production (ISPA), National Council of Research (CNR), 70126 Bari, Italy; (M.D.); (V.L.); (A.F.L.); (A.C.)
| | - Vito Linsalata
- Institute of Sciences of Food Production (ISPA), National Council of Research (CNR), 70126 Bari, Italy; (M.D.); (V.L.); (A.F.L.); (A.C.)
| | - Sadok Boukhchina
- Laboratory of Neurophysiology, Cellular Physiopathology and Biomolecules Valorization, Faculty of Science of Tunis, University Tunis El Manar, LR18ES03, Tunis 2092, Tunisia; (M.M.); (S.B.)
| | - Antonio F. Logrieco
- Institute of Sciences of Food Production (ISPA), National Council of Research (CNR), 70126 Bari, Italy; (M.D.); (V.L.); (A.F.L.); (A.C.)
| | - Angela Cardinali
- Institute of Sciences of Food Production (ISPA), National Council of Research (CNR), 70126 Bari, Italy; (M.D.); (V.L.); (A.F.L.); (A.C.)
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Abstract
We present the results of direct dynamics simulations and DFT calculations aimed at elucidating the effect of O-sulfonation on the collision-induced dissociation for serine. Toward this end, direct dynamics simulations of both serine and sulfoserine were performed at multiple collision energies and theoretical mass spectra obtained. Comparisons to experimental results are favorable for both systems. Peaks related to the sulfo group are identified and the reaction dynamics explored. In particular, three significant peaks (m/z 106, 88, and 81) seen in the theoretical mass spectrum directly related to the sulfo group are analyzed as well as major peaks shared by both systems. Our analysis shows that the m/z 106 peaks result from intramolecular rearrangements, intermolecular proton transfer among complexes composed of initial fragmentation products, and at high energy side-chain fragmentation. The m/z 88 peak was found to contain multiple constitutional isomers, including a previously unconsidered, low energy structure. It was also observed that the RM1 semiempirical method was not able to obtain all of the major peaks seen in experimens for sulfoserine. In contrast, PM6 did obtain all major experimental peaks.
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Affiliation(s)
- Kenneth Lucas
- Department of Chemistry and Biochemistry Siena College 515 Loudon Road Loudonville, New York 12211, United States
| | - George L Barnes
- Department of Chemistry and Biochemistry Siena College 515 Loudon Road Loudonville, New York 12211, United States
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Cuprys A, Thomson P, Ouarda Y, Suresh G, Rouissi T, Kaur Brar S, Drogui P, Surampalli RY. Ciprofloxacin removal via sequential electro-oxidation and enzymatic oxidation. J Hazard Mater 2020; 389:121890. [PMID: 31862355 DOI: 10.1016/j.jhazmat.2019.121890] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/10/2019] [Accepted: 12/11/2019] [Indexed: 06/10/2023]
Abstract
The combination of electro-oxidation and enzymatic oxidation was tested to evaluate the potency of this system to remove ciprofloxacin (CIP), a fluoroquinolone antibiotic, from water. For the electro-oxidation boron-doped diamond (BDD) and mixed metal oxides anodes were tested, at three current densities (4.42, 17.7 and 35.4 A/cm2). BDD anode at 35.4 A/cm2 exhibited the highest removal efficiency in the shortest time (>90 % removal in 6 min). For the enzymatic oxidation, laccase from Trametes versicolor was chosen. Laccase alone was not able to remove CIP; hence the influence of redox mediators was investigated. The addition of syringaldehyde (SA) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) resulted in enhanced CIP transformation. About 48.9±4.0 % of CIP remained after 4 h of treatment when SA-mediated laccase was applied and 87.8±6.6 % in the case of ABTS-mediated laccase. The coupling of enzymatic oxidation followed by electro-oxidation led to 73 % removal of the antibiotic. Additionally, the antimicrobial activity increased up to its original efficiency after the treatment. The combination of electro-oxidation followed by enzymatic oxidation led to 97-99 % removal of CIP. There was no antimicrobial activity of the solution after the treatment. The tests with wastewater confirmed the efficacy of the system to remove CIP from the complex matrix.
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Affiliation(s)
- Agnieszka Cuprys
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9 Canada
| | - Paisley Thomson
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9 Canada
| | - Yassine Ouarda
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9 Canada
| | - Gayatri Suresh
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9 Canada
| | - Tarek Rouissi
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9 Canada
| | - Satinder Kaur Brar
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9 Canada; Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, Ontario, M3J 1P3 Canada.
| | - Patrick Drogui
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9 Canada
| | - Rao Y Surampalli
- Department of Civil Engineering, University of Nebraska-Lincoln, N104 SEC PO Box 886105, Lincoln, NE 68588-6105, USA
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Hsieh YH, Li Y, Pan Z, Chen Z, Lu J, Yuan J, Zhu Z, Zhang J. Ultrasonication-assisted synthesis of alcohol-based deep eutectic solvents for extraction of active compounds from ginger. Ultrason Sonochem 2020; 63:104915. [PMID: 31945581 DOI: 10.1016/j.ultsonch.2019.104915] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 11/18/2019] [Accepted: 11/27/2019] [Indexed: 05/22/2023]
Abstract
An ultrasonication-assisted synthesis of alcohol-based deep eutectic solvents (DESs) is described. Several DESs were synthesized simultaneously under the same conditions. The prepared DESs were used for the extraction of gingerols from ginger powder via ultrasonication-assisted extraction. Notably, some of the prepared DESs exhibited superior extraction performance than those in traditional organic solvents. The viscosity of the DESs, which was suggested to be typically lower than 100 mPa*s had a critical effect on extraction performance. However, the higher gingerol contents in the extracts did not translate to higher active antioxidant abilities. The extraction temperature was found to be a key determinant of the antioxidant capability of the extracted gingerols while the use of higher temperatures (>50 °C) induced degradation and loss of phenolic compounds during extraction. Response surface methodology was applied for determining the optimal extraction conditions to achieve maximum antioxidant capacity with suitable gingerol content. All compounds used for the preparation of the DESs in this study have been widely employed in cosmetic and pharmaceutical fields. Therefore, the extracts in these DES solutions can be considered for direct application development without further product isolation.
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Affiliation(s)
- Yun-Hao Hsieh
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Shenzhen 518055, China; Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055 China
| | - Yuanbin Li
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Shenzhen 518055, China; Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055 China
| | - Zuchen Pan
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Shenzhen 518055, China; Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055 China
| | - Zhengjian Chen
- Zhuhai Institute of Advanced Technology Chinese Academy of Sciences, Biomaterials Research Center, Zhuhai, China
| | - Jiahai Lu
- Zhuhai Institute of Advanced Technology Chinese Academy of Sciences, Biomaterials Research Center, Zhuhai, China
| | - Jumao Yuan
- Zhuhai Institute of Advanced Technology Chinese Academy of Sciences, Biomaterials Research Center, Zhuhai, China
| | - Zhenye Zhu
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Shenzhen 518055, China; Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055 China.
| | - Jiaheng Zhang
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Shenzhen 518055, China; Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055 China; Zhuhai Institute of Advanced Technology Chinese Academy of Sciences, Biomaterials Research Center, Zhuhai, China.
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Lee CW, Wu JK, Chang CH, Cheng CW, Chang HY, Wang PC, Tseng FG. Sulfonated Polyaniline as Zwitterionic and Conductive Interfaces for Anti-Biofouling on Open Electrode Surfaces in Electrodynamic Systems. ACS Appl Mater Interfaces 2020; 12:19102-19109. [PMID: 32129059 DOI: 10.1021/acsami.9b21135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Electrodynamic systems for bioanalytical applications constantly suffer from biofouling due to electrical field-induced nonspecific bioadsorption on electrode surfaces. To minimize this issue, surface modification using anti-biofouling and conductive materials is necessary to not only protect the electrode surface from nonspecific bioadsorption but also maintain desired electrodynamic properties for electrode operation. In this study, we designed and prepared a conductive, zwitterionic, and self-doped sulfonated polyaniline (SPANI) coating on Au electrode surfaces for anti-biofouling applications. The zwitterionic coating was fabricated by electrochemical polymerization of aniline on the Au electrode surface functionalized with cysteamine (HS-CH2CH2-NH2) and then a post-polymerization treatment with fuming sulfuric acid. We found that the SPANI-coated electrodes exhibited an excellent anti-biofouling ability in dielectrophoresis (DEP) capturing-and-releasing processes, with a very low average residual mass rate of 1.44% for the SPANI-5s electrode, whereas electrodes modified with poly(ethylene glycol) (PEG) gave an average residual mass rate of 14.30%. Even under continuous operation for more than 1 h, the SPANI-5s electrode still showed stable anti-biofouling ability for an 11-cycle E. coli capturing-and-releasing DEP process, with the residual mass rate for all 11 cycles being kept at or below 2.18% to give an average residual mass rate of 1.62% with a standard deviation of 0.40%. This study demonstrates that electrodynamic systems with zwitterionic SPANI coated on open electrode surfaces can excellently function with decent conductance and anti-biofouling performance.
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Affiliation(s)
- Chun-Wei Lee
- Department of Engineering and System Science, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan, ROC
| | - Jen-Kuei Wu
- Department of Engineering and System Science, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan, ROC
| | - Chia-Hsin Chang
- Department of Engineering and System Science, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan, ROC
| | - Chi-Wen Cheng
- Department of Engineering and System Science, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan, ROC
| | - Hwan-You Chang
- Institute of Molecular Medicine, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan, ROC
| | - Pen-Cheng Wang
- Department of Engineering and System Science, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan, ROC
| | - Fan-Gang Tseng
- Department of Engineering and System Science, Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, No. 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan, ROC
- Research Center for Applied Sciences, Academia Sinica, No. 128, Sec. 2, Academia Rd., Nankang, Taipei 11529, Taiwan, ROC
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Wang L, Zhou X, Lu H, Mu X, Jin L. Synthesis and Antibacterial Evaluation of Novel 1,3,4-Oxadiazole Derivatives Containing Sulfonate/Carboxylate Moiety. Molecules 2020; 25:E1488. [PMID: 32218317 PMCID: PMC7180883 DOI: 10.3390/molecules25071488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/21/2020] [Accepted: 03/23/2020] [Indexed: 11/17/2022] Open
Abstract
Abstract: In order to discover new lead compounds with high antibacterial activity, a series of new derivatives were designed and synthesized by introducing a sulfonate or carboxylate moiety into the 1,3,4-oxadiazole structure. Antibacterial activity against two phytopathogens, Xanthomonas oryzae pv. oryzae (Xoo) and Xanthomonas axonopodis pv. citri (Xac), was assayed in vitro. The preliminary results indicated that ten compounds including 4a-1-4a-4 and 4a-11-4a-16 had good antibacterial activity against Xoo, with EC50 values ranging from 50.1-112.5 µM, which was better than those of Bismerthiazol (253.5 µM) and Thiodiazole copper (467.4 µM). Meanwhile, 4a-1, 4a-2, 4a-3 and 4a-4 demonstrated good inhibitory effect against Xanthomonas axonopodis pv. citri with EC50 values around 95.8-155.2 µM which were better than those of bismerthiazol (274.3 µM) and thiodiazole copper (406.3 µM). In addition, in vivo protection activity of compound 4a-2 and 4a-3 against rice bacterial leaf blight was 68.6% and 62.3%, respectively, which were better than bismerthiazol (49.6%) and thiodiazole copper (42.2%). Curative activity of compound 4a-2 and 4a-3 against rice bacterial leaf blight was 62.3% and 56.0%, which were better than bismerthiazol (42.9%) and thiodiazole copper (36.1%). Through scanning electron microscopy (SEM) analysis, it was observed that compound 4a-2 caused the cell membrane of Xanthomonas oryzae pv. oryzae ruptured or deformed. The present results indicated novel derivatives of 5-phenyl sulfonate methyl 1,3,4-oxadiazole might be potential antibacterial agents.
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Affiliation(s)
| | - Xia Zhou
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China; (L.W.); (H.L.); (X.M.)
| | | | | | - Linhong Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China; (L.W.); (H.L.); (X.M.)
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76
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Premakshi H, Kariduraganavar MY, Mitchell GR. Crosslinked Nanocomposite Sodium Alginate-Based Membranes with Titanium Dioxide for the Dehydration of Isopropanol by Pervaporation. Molecules 2020; 25:E1298. [PMID: 32178417 PMCID: PMC7144470 DOI: 10.3390/molecules25061298] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/19/2020] [Accepted: 03/03/2020] [Indexed: 11/16/2022] Open
Abstract
Sodium alginate (NaAlg) based membranes were prepared using a solution technique, crosslinked with poly(styrene sulfonic acid-co-maleic acid) (PSSA-co-MA). Subsequently, the membranes were modified by the incorporation of 0, 10, 20, 30 and 40% w/w of titanium dioxide with respect to sodium alginate. The membranes thus obtained were designated as M, M-1, M-2, M-3 and M-4, respectively. An equilibrium swelling experiment was performed using different compositions of the water and isopropanol mixtures. Subsequently, we used a pervaporation cell fitted with each membrane in order to evaluate the extent of the pervaporation dehydration of isopropanol. Among the membranes studied, the membranes containing 40 mass% of titanium dioxide exhibited the highest separation factor(α) of 24,092, with a flux(J) of 18.61 × 10-2 kg/m2∙h at 30 °C for 10 mass% w/w of water in the feed. The total flux and the flux of water were found to overlap with each other, indicating that these membranes can be effectively used to break the azeotropic point of water-isopropanol mixtures. The results clearly indicate that these nanocomposite membranes exhibit an excellent performance in the dehydration of isopropanol. The activation energy values obtained for the water permeation were significantly lower than those of the isopropanol permeation, underlining that these membranes have a high separation ability for the water-isopropanol system. The estimated activation energies for total permeation (EP) and total diffusion (ED) values ranged between 10.60 kJ∙mol-1 and 3.96 kJ∙mol-1, and 10.76 kJ∙mol-1 and 4.29 kJ∙mol-1, respectively. The negative change in the enthalpy values for all the membranes indicates that sorption was mainly dominated by Langmuir's mode of sorption.
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Affiliation(s)
- H.G. Premakshi
- P. G. Department of Studies in Chemistry, Karnatak University, Dharwad 580 003, India;
| | | | - Geoffrey R. Mitchell
- Centre for Rapid & Sustainable Product Development, Polytechnic of Leiria, 2430-028 Marinha Grande, Portugal
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Zhang H, Liu R, Lu Q. Separation and Characterization of Phenolamines and Flavonoids from Rape Bee Pollen, and Comparison of Their Antioxidant Activities and Protective Effects Against Oxidative Stress. Molecules 2020; 25:molecules25061264. [PMID: 32168811 PMCID: PMC7144025 DOI: 10.3390/molecules25061264] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/08/2020] [Accepted: 03/09/2020] [Indexed: 02/03/2023] Open
Abstract
Phenolamines and flavonoids are two important components in bee pollen. There are many reports on the bioactivity of flavonoids in bee pollen, but few on phenolamines. This study aims to separate and characterize the flavonoids and phenolamines from rape bee pollen, and compare their antioxidant activities and protective effects against oxidative stress. The rape bee pollen was separated to obtain 35% and 50% fractions, which were characterized by HPLC-ESI-QTOF-MS/MS. The results showed that the compounds in 35% fraction were quercetin and kaempferol glycosides, while the compounds in 50% fraction were phenolamines, including di-p-coumaroyl spermidine, p-coumaroyl caffeoyl hydroxyferuloyl spermine, di-p-coumaroyl hydroxyferuloyl spermine, and tri-p-coumaroyl spermidine. The antioxidant activities of phenolamines and flavonoids were evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS), and ferric reducing antioxidant power (FRAP) assays. It was found that the antioxidant activity of phenolamines was significantly higher than that of flavonoids. Moreover, phenolamines showed better protective effects than flavonoids on HepG2 cells injured by AAPH. Furthermore, phenolamines could significantly reduce the reactive oxygen species (ROS), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels, and increase the superoxide dismutase (SOD) and glutathione (GSH) levels. This study lays a foundation for the further understanding of phenolamines in rape bee pollen.
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Affiliation(s)
- Huifang Zhang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (H.Z.); (R.L.)
| | - Rui Liu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (H.Z.); (R.L.)
- Wuhan Engineering Research Center of Bee Products on Quality and Safety Control, Wuhan 430070, China
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, China
- Key Laboratory of Urban Agriculture in Central China, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Qun Lu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (H.Z.); (R.L.)
- Wuhan Engineering Research Center of Bee Products on Quality and Safety Control, Wuhan 430070, China
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, China
- Key Laboratory of Urban Agriculture in Central China, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
- Correspondence: ; Tel.: +86-27-87288373; Fax: +86-27-87282111
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Wu DT, Nie XR, Shen DD, Li HY, Zhao L, Zhang Q, Lin DR, Qin W. Phenolic Compounds, Antioxidant Activities, and Inhibitory Effects on Digestive Enzymes of Different Cultivars of Okra ( Abelmoschus esculentus). Molecules 2020; 25:molecules25061276. [PMID: 32168896 PMCID: PMC7143948 DOI: 10.3390/molecules25061276] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/03/2020] [Accepted: 03/09/2020] [Indexed: 11/16/2022] Open
Abstract
In this study, the phenolic profiles and bioactivities of five representative cultivars of okra collected in China were investigated. Noticeable variations of phenolic compounds and their bioactivities were observed among these different cultivars of okra. The contents of total flavonoids (TFC) in “Shuiguo”, “Kalong 8”, “Kalong 3”, “Wufu”, and “Royal red” ranged from 1.75 to 3.39 mg RE/g DW, of which “Shuiguo” showed the highest TFC. Moreover, five individual phenolic compounds were found in okra by high performance liquid chromatography analysis, including isoquercitrin, protocatechuic acid, quercetin-3-O-gentiobioside, quercetin, and rutin, while isoquercitrin and quercetin-3-O-gentiobioside were detected as the main phenolic compounds in okra. Moreover, all tested okra exhibited significant antioxidant activities (2,2-diphenyl-1-picrylhydrazyl radical scavenging capacity, 2,2’-azino-bis (3-ethylenzthiazoline-6-sulphonic acid) radical scavenging capacity, and ferric reducing antioxidant power) and inhibitory effects on digestive enzymes (lipase, α-glucosidase, and α-amylase). Indeed, “Shuiguo” exhibited much better antioxidant activities and inhibitory activities on digestive enzymes, which might be attributed to its high TFC. Results suggested that okra, especially “Shuiguo”, could be developed as natural antioxidants and inhibitors against hyperlipidemia and hyperglycemia in the fields of functional foods and pharmaceuticals, which could meet the increasing demand for high-quality okra with health-promoting properties in China.
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Affiliation(s)
- Ding-Tao Wu
- Correspondence: (D.-T.W.); (W.Q.); Tel.: +86-0835-2883219
| | | | | | | | | | | | | | - Wen Qin
- Correspondence: (D.-T.W.); (W.Q.); Tel.: +86-0835-2883219
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79
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El-Gamal MI, Zaraei SO, Foster PA, Anbar HS, El-Gamal R, El-Awady R, Potter BVL. A new series of aryl sulfamate derivatives: Design, synthesis, and biological evaluation. Bioorg Med Chem 2020; 28:115406. [PMID: 32173116 DOI: 10.1016/j.bmc.2020.115406] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/27/2020] [Accepted: 02/29/2020] [Indexed: 12/12/2022]
Abstract
Steroid sulfatase (STS) has recently emerged as a drug target for management of hormone-dependent malignancies. In the present study, a new series of twenty-one aryl amido-linked sulfamate derivatives 1a-u was designed and synthesized, based upon a cyclohexyl lead compound. All members were evaluated as STS inhibitors in a cell-free assay. Adamantyl derivatives 1h and 1p-r were the most active with more than 90% inhibition at 10 µM concentration and, for those with the greatest inhibitory activity, IC50 values were determined. These compounds exhibited STS inhibition within the range of ca 25-110 nM. Amongst them, compound 1q possessing a o-chlorobenzene sulfamate moiety exhibited the most potent STS inhibitory activity with an IC50 of 26 nM. Furthermore, to assure capability to pass through the cell lipid bilayer, compounds with low IC50 values were tested against STS activity in JEG-3 whole-cell assays. Consequently, 1h and 1q demonstrated IC50 values of ca 14 and 150 nM, respectively. Thus, compound 1h is 31 times more potent than the corresponding cyclohexyl lead (IC50 value = 421 nM in a JEG-3 whole-cell assay). Furthermore, the most potent STS inhibitors (1h and 1p-r) were evaluated for their antiproliferative activity against the estrogen-dependent breast cancer cell line T-47D. They showed promising activity with single digit micromolar IC50 values (ca 1-6 µM) and their potency against T-47D cells was comparable to that against STS enzyme. In conclusion, this new class of adamantyl-containing aryl sulfamate inhibitor has potential for further development against hormone-dependent tumours.
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Affiliation(s)
- Mohammed I El-Gamal
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates; Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates; Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt.
| | - Seyed-Omar Zaraei
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Paul A Foster
- Institute of Metabolism and Systems Research, 2nd Floor IBR Tower, University of Birmingham, Birmingham B15 2TT, United Kingdom; Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham B15 2TH, United Kingdom.
| | - Hanan S Anbar
- Department of Clinical Pharmacy and Pharmacotherapeutics, Dubai Pharmacy College for Girls, Dubai 19099, United Arab Emirates
| | - Randa El-Gamal
- Department of Medical Biochemistry, Faculty of Medicine, University of Mansoura, Mansoura 35516, Egypt
| | - Raafat El-Awady
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates; Department of Pharmacy Practice and Pharmacotherapeutics, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Barry V L Potter
- Medicinal Chemistry & Drug Discovery, Department of Pharmacology, University of Oxford, Oxford OX1 3QT, United Kingdom
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80
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Oliver DP, Li Y, Orr R, Nelson P, Barnes M, McLaughlin MJ, Kookana RS. Sorption behaviour of per- and polyfluoroalkyl substances (PFASs) in tropical soils. Environ Pollut 2020; 258:113726. [PMID: 32006795 DOI: 10.1016/j.envpol.2019.113726] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/12/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
The sorption behaviour of three perfluoroalkyl substances (PFASs), namely perfluorooctane sulfonic acid (PFOS), perfluorooctanoic acid (PFOA) and perfluorohexane sulfonic acid (PFHxS), was determined on 28 tropical soils. Tropical soils are often highly weathered, richer in sesquioxides than temperate soils and may contain variable charge minerals. There are little data on sorption of PFASs in tropical soils. The highest Kd values were found for PFOS with mean values ranging from 0 to 31.6 L/kg. The Kd values for PFOA and PFHxS ranged from 0 to 4.9 L/kg and from 0 to 5.6 L/kg, respectively. While these values are in the range of literature sorption data, the average Kd values for PFOS and PFOA from the literature were 3.7 times and 3.6 times higher, respectively, than those measured in this study. Stepwise regression analysis did explain some of the variance, but with different explanatory variables for the different PFASs. The main soil properties explaining sorption for PFOS and PFOA were oxalate-extractable Al and pH, and for PFHxS was pH.
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Affiliation(s)
- Danielle P Oliver
- CSIRO Land and Water, Locked Bag 2, Glen Osmond, 5064, South Australia, Australia.
| | - Yasong Li
- CSIRO Land and Water, Locked Bag 2, Glen Osmond, 5064, South Australia, Australia.
| | - Ryan Orr
- College of Science and Engineering, James Cook University, Cairns, 4878, Qld, Australia.
| | - Paul Nelson
- College of Science and Engineering, James Cook University, Cairns, 4878, Qld, Australia.
| | - Mary Barnes
- Centre for Epidemiology and Biostatistics, Flinders University, Adelaide, SA, 5001, Australia.
| | - Michael J McLaughlin
- Soil Science, Waite Research Institute, University of Adelaide, Glen Osmond, 5064, South Australia, Australia.
| | - Rai S Kookana
- CSIRO Land and Water, Locked Bag 2, Glen Osmond, 5064, South Australia, Australia; Soil Science, Waite Research Institute, University of Adelaide, Glen Osmond, 5064, South Australia, Australia.
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81
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Li Z, Liu P, Ji X, Gong J, Hu Y, Wu W, Wang X, Peng HQ, Kwok RTK, Lam JWY, Lu J, Tang BZ. Bioinspired Simultaneous Changes in Fluorescence Color, Brightness, and Shape of Hydrogels Enabled by AIEgens. Adv Mater 2020; 32:e1906493. [PMID: 32022969 DOI: 10.1002/adma.201906493] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 12/27/2019] [Indexed: 05/28/2023]
Abstract
Development of stimuli-responsive materials with complex practical functions is significant for achieving bioinspired artificial intelligence. It is challenging to fabricate stimuli-responsive hydrogels showing simultaneous changes in fluorescence color, brightness, and shape in response to a single stimulus. Herein, a bilayer hydrogel strategy is designed by utilizing an aggregation-induced emission luminogen, tetra-(4-pyridylphenyl)ethylene (TPE-4Py), to fabricate hydrogels with the above capabilities. Bilayer hydrogel actuators with the ionomer of poly(acrylamide-r-sodium 4-styrenesulfonate) (PAS) as a matrix of both active and passive layers and TPE-4Py as the core function element in the active layer are prepared. At acidic pH, the protonation of TPE-4Py leads to fluorescence color and brightness changes of the actuators and the electrostatic interactions between the protonated TPE-4Py and benzenesulfonate groups of the PAS chains in the active layer cause the actuators to deform. The proposed TPE-4Py/PAS-based bilayer hydrogel actuators with such responsiveness to stimulus provide insights in the design of intelligent systems and are highly attractive material candidates in the fields of 3D/4D printing, soft robots, and smart wearable devices.
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Affiliation(s)
- Zhao Li
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Pengchao Liu
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Xiaofan Ji
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Junyi Gong
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Yubing Hu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Wenjie Wu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Xinnan Wang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Hui-Qing Peng
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Ryan T K Kwok
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Jacky W Y Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
| | - Jian Lu
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
- Center for Advanced Structural Materials, City University of Hong Kong, Shenzhen Research Institute, 8 Yuexing 1st Road, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, 518057, P. R. China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan, Shenzhen, 518057, China
- Center for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institutes, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, China
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82
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Kirboga S, Öner M. Oxygen Barrier and Thermomechanical Properties of Poly (3-hydroxybutyrate-co-3-hydroxyvalerate) Biocomposites Reinforced with Calcium Carbonate Particles. Acta Chim Slov 2020; 67:137-150. [PMID: 33558918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023] Open
Abstract
This study aimed to prepare poly (3-hydroxybutyrate-co-3-hydroxyvalerate), biocomposites with incorporating various percentages of calcium carbonate using extrusion processing. Calcium carbonate was synthesized in the absence and presence of poly(vinyl sulfonic acid). The polymorph and morphology of calcium carbonate chanced with the introduction of poly(vinyl sulfonic acid). The rhombohedral calcite was obtained in the absence of poly(vinyl sulfonic acid). Rhombohedral calcite transformed into spherical vaterite with the addition of poly(vinyl sulfonic acid). The influence of filler contents on the properties of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) composites was studied. The structure and properties of poly (3-hydroxybutyrate-co-3-hydroxyvalerate)/ calcium carbonate biocomposites were investigated by XRD, FTIR, TGA, DSC, SEM, OTR and DMA. The nucleation effect of the calcium carbonate on the crystallization of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) was observed in the DSC and XRD measurements by increasing crystallinity of poly (3-hydroxybutyrate-co-3-hydroxyvalerate). It was shown that the variation of the barrier properties of biocomposites was influenced by polymorph and morphology of calcium carbonate. The addition of 0.5 wt% of the rhombohedral calcite and spherical vaterite increased the barrier properties by 25% and 12%, respectively compared to neat polymer. The dynamic mechanical properties of composites based on rhombohedral calcite and spherical vaterite in poly (3-hydroxybutyrate-co-3-hydroxyvalerate) matrix were investigated. The storage modulus increases by adding both particles in the composites over a wide range of temperature (-30 to 150 °C) where the reinforcing effect of calcite and vaterite was confirmed. At the same loading level, rhombohedral calcite led to more increase in the storage modulus, while less increase in storage modulus was observed in the presence of spherical vaterite particles.
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83
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Lasinskas M, Jariene E, Vaitkeviciene N, Hallmann E, Najman K. Effect of Different Durations of Solid-Phase Fermentation for Fireweed ( Chamerion angustifolium (L.) Holub) Leaves on the Content of Polyphenols and Antioxidant Activity In Vitro. Molecules 2020; 25:E1011. [PMID: 32102409 PMCID: PMC7070727 DOI: 10.3390/molecules25041011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 12/12/2022] Open
Abstract
Fireweed has recently been recognized as a plant with high antioxidant potential and phenolic content. Its leaves can be fermented to prepare an infusion with ideal antioxidant activity. The aim of this study was to investigate and to determine the influence of solid-phase fermentation of different durations on the variation of polyphenols in the leaves of fireweed. Laboratory experiments were conducted in 2017-2018. The leaves of fireweed, naturally growing, were fermented for different periods of time: not fermented (control) and fermented for 24 and 48 h. The evaluation of polyphenols and antioxidant activity in leaves was performed using high- performance liquid chromatography (HPLC). Additionally, principal component analysis was used to characterize differences in bioactive compounds between fireweed samples fermented at different durations. Solid-phase fermented leaves were characterized by higher contents of oenothein B, quercetin and benzoic acid but had lower contents of quercetin-3-O-rutinoside, luteolin and chlorogenic and gallic acids. Antioxidant activity in short- (24 h) and long-term (48 h) fermentation (compared to control) gave the highest level of regression in 2017, but in 2018 the effect was observed only with short-term fermentation and control. In conclusion, solid-phase fermentation can be used to modulate biologically active compounds in fireweed leaves.
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Affiliation(s)
- Marius Lasinskas
- Vytautas Magnus University. Agriculture Academy, Institute of Agriculture and Food Sciences, Donelaicio str. 58, 44248 Kaunas, Lithuania; (E.J.); (N.V.)
| | - Elvyra Jariene
- Vytautas Magnus University. Agriculture Academy, Institute of Agriculture and Food Sciences, Donelaicio str. 58, 44248 Kaunas, Lithuania; (E.J.); (N.V.)
| | - Nijole Vaitkeviciene
- Vytautas Magnus University. Agriculture Academy, Institute of Agriculture and Food Sciences, Donelaicio str. 58, 44248 Kaunas, Lithuania; (E.J.); (N.V.)
| | - Ewelina Hallmann
- Warsaw University of Life Sciences, Institute of Human Nutrition Sciences, Department of Functional and Organic Food, Nowoursynowska 15c, 02-776 Warsaw, Poland; (E.H.); (K.N.)
| | - Katarzyna Najman
- Warsaw University of Life Sciences, Institute of Human Nutrition Sciences, Department of Functional and Organic Food, Nowoursynowska 15c, 02-776 Warsaw, Poland; (E.H.); (K.N.)
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84
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Abstract
Graphene oxide (GO) has drawn worldwide attention in various biomedical fields because of its unique properties, and great progress has been made in the past years. Probing the interaction between GO and proteins, understanding and evaluating potential impact of GO on the protein structure and function, is of significant importance for design and optimization of functional interfaces and revealing the bioeffect of GO materials. Cytochrome c (cyt c), one of the key components of respiratory chain, has played important roles in energy generation/consumption and many cellular processes including growth, proliferation, differentiation, and apoptosis. In this study, by combination of solution chemistry and spectroscopy, we systematically studied the interfacial interaction between GO and cyt c. Results suggest that GO could slightly perturb the active site of cyt c, enhancing its peroxidase activity. Structure of the active site is obviously changed with elapsed time, which in turn reduces peroxidase activity. Further study suggests that adsorption of cyt c on GO and the resulted structure change is a complex process resulting from the cooperation of various interaction forces. Hydrophobic interaction and π-π stacking, as well as electrostatic attraction, only slightly perturb the microenvironment of the active site of cyt c while hydrogen-bonding interaction is the main driving force for the structural change of the active site. Furthermore, long range electrostatic attraction between GO and cyt c may facilitate the short range hydrogen-bonding interaction, which intensifies the hydrogen-bonding-induced structural change. In addition, cyt c is partially reduced by GO in an alkaline environment. Based on the understanding of interfacial interaction mechanism between GO and cyt c, stable nanocomposites with enhanced peroxidase activity are successfully constructed by modulating the interfacial interaction forces. This work not only deepens the understanding of interaction between GO and functional protein, but also is of great importance for designing and applying of GO-based biomaterials.
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Affiliation(s)
- Lie Wu
- State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , Jilin , China
| | - Xiue Jiang
- State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , Jilin , China
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85
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Ingle AP, Philippini RR, Rai M, Silvério da Silva S. Catalytic hydrolysis of cellobiose using different acid-functionalised Fe 3O 4 magnetic nanoparticles. IET Nanobiotechnol 2020; 14:40-46. [PMID: 31935676 PMCID: PMC8676166 DOI: 10.1049/iet-nbt.2019.0181] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 09/10/2019] [Accepted: 09/16/2019] [Indexed: 12/18/2023] Open
Abstract
The present study demonstrated the preparation of three different acid-functionalised magnetic nanoparticles (MNPs) and evaluation for their catalytic efficacy in hydrolysis of cellobiose. Initially, iron oxide (Fe3O4)MNPs were synthesised, which further modified by applying silica coating (Fe3O4-MNPs@Si) and functionalised with alkylsulfonic acid (Fe3O4-MNPs@Si@AS), butylcarboxylic acid (Fe3O4-MNPs@Si@BCOOH) and sulphonic acid (Fe3O4-MNPs@Si@SO3H) groups. The Fourier transform infrared analysis confirmed the presence of above-mentioned acid functional groups on MNPs. Similarly, X-ray diffraction pattern and energy dispersive X-ray spectroscopy analysis confirmed the crystalline nature and elemental composition of MNPs, respectively. TEM micrographs showed the synthesis of spherical and polydispersed nanoparticles having diameter size in the range of 20-80 nm. Cellobiose hydrolysis was used as a model reaction to evaluate the catalytic efficacy of acid-functionalised nanoparticles. A maximum 74.8% cellobiose conversion was reported in case of Fe3O4-MNPs@Si@SO3H in first cycle of hydrolysis. Moreover, thus used acid-functionalised MNPs were magnetically separated and reused. In second cycle of hydrolysis, Fe3O4-MNPs@Si@SO3H showed 49.8% cellobiose conversion followed by Fe3O4-MNPs@Si@AS (45%) and Fe3O4-MNPs@Si@BCOOH (18.3%). However, similar pattern was reported in case of third cycle of hydrolysis. The proposed approach is considered as rapid and convenient. Moreover, reuse of acid-functionalised MNPs makes the process economically viable.
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Affiliation(s)
- Avinash P Ingle
- Department of Biotechnology, Engineering School of Lorena, University of Sao Paulo, Lorena, SP, Brazil.
| | - Rafael R Philippini
- Department of Biotechnology, Engineering School of Lorena, University of Sao Paulo, Lorena, SP, Brazil
| | - Mahendra Rai
- Department of Biotechnology, Sant Gadge Baba Amravati University, Amravati, Maharashtra, India
| | - Silvio Silvério da Silva
- Department of Biotechnology, Engineering School of Lorena, University of Sao Paulo, Lorena, SP, Brazil
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86
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Abdel Moamen OA, Hassan HS, Zaher WF. Taguchi L 16 optimization approach for simultaneous removal of Cs + and Sr 2+ ions by a novel scavenger. Ecotoxicol Environ Saf 2020; 189:110013. [PMID: 31812822 DOI: 10.1016/j.ecoenv.2019.110013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/11/2019] [Accepted: 11/26/2019] [Indexed: 06/10/2023]
Abstract
This study targeted to investigate the efficacy of a novel nano 2-naphtyl amine6:6-azulene sodium methanesulfonate di sulphonic acid-impregnated zeolite scavenger for simultaneous elimination of Cs+ and Sr2+ ions from binary aqueous systems. Fractal analysis is introduced to assign a fractal dimension and other fractal characteristics necessary for the surface characterization in terms of fractal dimension (Ds) and pre-exponential coefficient (C), which, in theory, are independent tool and sole for each surface. It is found that the Ds value of nano 2-naphtyl amine6:6-azulene sodium methanesulfonate di sulphonic acid-impregnated zeolite of type Y (NAASMS-ZY) is higher than that of nano 2-naphtyl amine6:6-azulene sodium methanesulfonate di sulphonic acid-impregnated zeolite of type X (NAASMS-ZX) and nano 2-naphtyl amine6:6-azulene sodium methanesulfonate di sulphonic acid-impregnated zeolite of type A (NAASMS-ZA) which accordingly, suggests the irregularity of NAASMS-ZY surface and thus demonstrates a large surface area. To increase the scavenge efficacy, effecting parameters on scavenge process were investigated and optimized via the use of adopting Taguchi L16 design of experiments approach. It is found that, the initial metal ions concentration is the most powerful variable, and its value of contribution percentage is up to 33% and 31% for Cs+ and Sr2+, respectively. The kinetic curves and sorption isotherms at 298, 303 and 313 K were obtained, which well fitted to hyperbolic and Langmuir equations, respectively. Thermodynamic parameters demonstrated that the scavenge process was endothermic for both the concerned ions. Our results showed that the novel synthesized NAASMS-ZY is an effective nano-scavenger for cesium and strontium decontamination.
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Affiliation(s)
- O A Abdel Moamen
- Hot Lab. Center, Atomic Energy Authority of Egypt, P.O. 13759, Inshas, Cairo, Egypt.
| | - H S Hassan
- Hot Lab. Center, Atomic Energy Authority of Egypt, P.O. 13759, Inshas, Cairo, Egypt
| | - W F Zaher
- Hot Lab. Center, Atomic Energy Authority of Egypt, P.O. 13759, Inshas, Cairo, Egypt
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87
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Zhu S, Lu L. Selective Chromogenic Recognition of Copper(II) Ion by Thiacalix[4]arene Tetrasulfonate and Mechanism. Molecules 2020; 25:molecules25030612. [PMID: 32019230 PMCID: PMC7037022 DOI: 10.3390/molecules25030612] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 01/25/2020] [Accepted: 01/28/2020] [Indexed: 11/17/2022] Open
Abstract
Detection of biologically important transition metal ions such as copper by using a simple method is desirable and of great importance. In this work, we firstly reported that water-soluble thiacalix[4]arene tetrasulfonate (TCAS) exhibited selective chromogenic recognition towards copper(II) ion over other transition metal ions. Color change from colorless to salmon pink was observed in TCAS solution, weak bathochromic shift was induced in UV absorption spectrum of TCAS upon addition of copper(II) ion, and the absorbance of characteristic absorption band at 312 nm increased linearly with copper(II) ion concentration. The recognition mechanism of TCAS to copper(II) ion was investigated by a comparative study with calix[4]arene tetrasulfonate (CAS) and time-dependent density functional theory(TD-DFT) study, and the absorption bands were assigned based on transition orbital analysis.
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Affiliation(s)
- Shufang Zhu
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;
- State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Lilin Lu
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;
- Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
- Correspondence:
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88
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Sala S, Nealon GL, Sobolev AN, Fromont J, Gomez O, Flematti GR. Structure Reassignment of Echinosulfone A and the Echinosulfonic Acids A-D Supported by Single-Crystal X-ray Diffraction and Density Functional Theory Analysis. J Nat Prod 2020; 83:105-110. [PMID: 31934769 DOI: 10.1021/acs.jnatprod.9b00902] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Two previously reported bis-indole alkaloids, echinosulfone A and echinosulfonic acid B, have been isolated for the first time from a Western Australian marine sponge, Crella sp. (order: Poecilosclerida, family: Crellidae). Single-crystal X-ray diffraction of a decomposition product of echinosulfone A prompted our investigation and subsequent structure reassignment of the echinosulfonic acid natural product family, which we report here. The reassignments are supported by analysis of 1D and 2D NMR data, MS fragmentation, and DFT calculations of 13C NMR shifts.
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Affiliation(s)
- Samuele Sala
- School of Molecular Sciences , The University of Western Australia , Crawley , WA 6009 , Australia
| | - Gareth L Nealon
- School of Molecular Sciences , The University of Western Australia , Crawley , WA 6009 , Australia
| | - Alexandre N Sobolev
- School of Molecular Sciences , The University of Western Australia , Crawley , WA 6009 , Australia
| | - Jane Fromont
- Western Australian Museum , Welshpool , WA 6106 , Australia
| | - Oliver Gomez
- Western Australian Museum , Welshpool , WA 6106 , Australia
| | - Gavin R Flematti
- School of Molecular Sciences , The University of Western Australia , Crawley , WA 6009 , Australia
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89
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Goubet F, Dupree P, Johansen KS. Carbohydrate Gel Electrophoresis. Methods Mol Biol 2020; 2149:33-44. [PMID: 32617927 DOI: 10.1007/978-1-0716-0621-6_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Polysaccharide analysis using carbohydrate gel electrophoresis (PACE) relies on derivatization of reducing ends of sugars with a fluorophore, followed by electrophoresis under optimized conditions in polyacrylamide gels. PACE is a sensitive and simple tool for studying polysaccharide structure or quantity and also has applications in the investigation of enzyme specificity.
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Affiliation(s)
- Florence Goubet
- BASF Belgium Coordination Center Comm.V., Innovation Center Gent, Ghent, Belgium.
| | - Paul Dupree
- Department of Biochemistry, University of Cambridge, Cambridge, UK
| | - Katja Salomon Johansen
- University of Copenhagen, Geosciences and Natural Resources Management, Frederiksberg, Denmark
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90
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Carboué Q, Maresca M, Herbette G, Roussos S, Hamrouni R, Bombarda I. Naphtho-Gamma-Pyrones Produced by Aspergillus tubingensis G131: New Source of Natural Nontoxic Antioxidants. Biomolecules 2019; 10:biom10010029. [PMID: 31878243 PMCID: PMC7023098 DOI: 10.3390/biom10010029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 12/20/2019] [Accepted: 12/20/2019] [Indexed: 12/19/2022] Open
Abstract
Seven naphtho-gamma-pyrones (NγPs), including asperpyrone E, aurasperone A, dianhydroaurasperone C, fonsecin, fonsecinone A, fonsecin B, and ustilaginoidin A, were isolated from Aspergillus tubingensis G131, a non-toxigenic strain. The radical scavenging activity of these NγPs was evaluated using ABTS assay. The Trolox equivalent antioxidant capacity on the seven isolated NγPs ranged from 2.4 to 14.6 μmol L-1. The toxicity and ability of the NγPs to prevent H2O2-mediated cell death were evaluated using normal/not cancerous cells (CHO cells). This cell-based assay showed that NγPs: (1) Are not toxic or weakly toxic towards cells and (2) are able to protect cells from oxidant injuries with an IC50 on H2O2-mediated cell death ranging from 2.25 to 1800 μmol mL-1. Our data show that A. tubingensis G131 strain is able to produce various NγPs possessing strong antioxidant activities and low toxicities, making this strain a good candidate for antioxidant applications in food and cosmetic industries.
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Affiliation(s)
- Quentin Carboué
- Vinovalie, ZA les portes du Tarn, 81370 Saint-Sulpice-la-Pointe, France
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13397 Marseille, France; (S.R.); (R.H.)
- Correspondence: (Q.C.); (M.M.); (I.B.); Tel.: +33-491-28-8254 (M.M.)
| | - Marc Maresca
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
- Correspondence: (Q.C.); (M.M.); (I.B.); Tel.: +33-491-28-8254 (M.M.)
| | - Gaëtan Herbette
- Aix Marseille Univ, CNRS, Centrale Marseille, FSCM, Spectropole, 13397 Marseille, France;
| | - Sevastianos Roussos
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13397 Marseille, France; (S.R.); (R.H.)
| | - Rayhane Hamrouni
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13397 Marseille, France; (S.R.); (R.H.)
| | - Isabelle Bombarda
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13397 Marseille, France; (S.R.); (R.H.)
- Correspondence: (Q.C.); (M.M.); (I.B.); Tel.: +33-491-28-8254 (M.M.)
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91
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Sánchez-Gutiérrez JA, Moreno-Lorenzana D, Álvarez-Bernal D, Rodríguez-Campos J, Medina-Medrano JR. Phenolic Profile, Antioxidant and Anti-Proliferative Activities of Methanolic Extracts from Asclepias linaria Cav. Leaves. Molecules 2019; 25:molecules25010054. [PMID: 31877920 PMCID: PMC6983100 DOI: 10.3390/molecules25010054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 12/01/2022] Open
Abstract
Asclepias linaria Cav. (Apocynaceae) is a shrubby plant endemic of Mexico which has been used in traditional medicine. However, the bioactive potential of this plant remains unexplored. In this study, the phenolic composition, antioxidant, and cytotoxic activities of A. linaria leaves were determined. In order to estimate the phenolic composition of the leaves, the total phenolic, flavonoid, and condensed tannins contents were determined. Furthermore, the antioxidant activity was measured by the scavenging activity of the 2,2-diphenyl-1-picrylhydrazyl (DPPH•) and 2,2′-azino-bis[3-ethylbenzothiazoline-6-sulphonic acid] (ABTS•+) radicals and the total antioxidant capacity. The phenolic compounds identified in the A. linaria leaves by ultra-performance liquid chromatography coupled to mass spectrometry (UPLC-MS) include phenolic acids, such as p-coumaric and ferulic acid, as well as flavonoids, such as rutin and quercetin. The leaves’ extracts of A. linaria showed a high scavenging activity of DPPH• and ABTS•+ radicals (IC50 0.12 ± 0.001 and 0.51 ± 0.003 µg/mL, respectively), high total antioxidant capacity values (99.77 ± 4.32 mg of ascorbic acid equivalents/g of dry tissue), and had a cytotoxic effect against K562 and HL60 hematologic neoplasia cells lines, but no toxicity towards the normal mononuclear cell line was observed. These results highlight the potential of A. linaria and could be considered as a possible alternative source of anticancer compounds.
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Affiliation(s)
- José Alejandro Sánchez-Gutiérrez
- Instituto Politécnico Nacional, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Michoacán, Jiquilpan 59510, Michoacán, Mexico; (J.A.S.-G.); (D.Á.-B.)
| | | | - Dioselina Álvarez-Bernal
- Instituto Politécnico Nacional, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Michoacán, Jiquilpan 59510, Michoacán, Mexico; (J.A.S.-G.); (D.Á.-B.)
| | - Jacobo Rodríguez-Campos
- Unidad de Servicios Analíticos y Metrológicos, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Guadalajara 44270, Jalisco, Mexico;
| | - José Roberto Medina-Medrano
- CONACYT - Instituto Politécnico Nacional, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Michoacán, Jiquilpan 59510, Michoacán, Mexico
- Correspondence: ; Tel.: +52-(353)-533-0218 (ext. 82951)
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92
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Ullah S, Hussain SA, Shaukat F, Hameed A, Yang W, Song Y. Antioxidant Potential and the Characterization of Arachis hypogaea Roots. Biomed Res Int 2019; 2019:7073456. [PMID: 31950051 PMCID: PMC6948283 DOI: 10.1155/2019/7073456] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 10/27/2019] [Accepted: 11/27/2019] [Indexed: 02/03/2023]
Abstract
Arachis hypogaea roots are used as traditional Chinese medicine to treat different ailments, and the present study involves the exploration and comparison of phenolic profile and antioxidant activities (ABTS+ and DPPH assay) of A. hypogaea root extract in different solvents. 70% aqueous acetone and 70% aqueous ethanol were proved to be the best solvents to recover total phenolic compounds, with a yield of 42.59 ± 1.96 and 41.34 ± 0.92 mg/g dry weight of extract, respectively. ABTS+ radical scavenging activity was the highest in 70% aqueous ethanol, while the absolute methanol extract showed the highest DPPH radical scavenging activity (29.50 ± 2.19 μg/mL). Furthermore, phytochemical profiling of 70% acetone extract of A. hypogaea roots was performed by LC-ESI-TOF-MS analysis which in turn indicated the presence of diverse compounds in the A. hypogaea root extract, namely, quinones, stilbenoids, and flavones and flavonoid glucosides.
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Affiliation(s)
- Samee Ullah
- Colin Ratledge Center for Microbial Lipids, Center for Functional Foods and Health, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Lahore 54000, Pakistan
| | - Syed Ammar Hussain
- Colin Ratledge Center for Microbial Lipids, Center for Functional Foods and Health, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Faryal Shaukat
- Colin Ratledge Center for Microbial Lipids, Center for Functional Foods and Health, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Ahsan Hameed
- Colin Ratledge Center for Microbial Lipids, Center for Functional Foods and Health, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
- Clinical Research Center, Medical University of Bialystok, Bialystok 15-001, Poland
| | - Wu Yang
- Colin Ratledge Center for Microbial Lipids, Center for Functional Foods and Health, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
| | - Yuanda Song
- Colin Ratledge Center for Microbial Lipids, Center for Functional Foods and Health, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
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93
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Chen S, Zhang Y, Liu Y, Wang Q. Design, Synthesis, Acaricidal Activities, and Structure-Activity Relationship Studies of Novel Oxazolines Containing Sulfonate Moieties. J Agric Food Chem 2019; 67:13544-13549. [PMID: 31725276 DOI: 10.1021/acs.jafc.9b05547] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
With the ultimate goal of addressing pest-related constraints on global agricultural production, we used combination principles to design and synthesize 2,4-diphenyl-1,3-oxazolines containing a sulfonate moiety at the para-position of the 4-phenyl group. The target compounds, which have strong affinity for lipids and can be expected to traverse cell membranes, were characterized by 1H and 13C NMR spectroscopy and high-resolution mass spectrometry. Their activities against the larvae and eggs of carmine spider mites (Tetranychus cinnabarinus) were determined by a leaf-dipping method and compared with the activity of the commercial acaricide etoxazole. Most of the test compounds displayed good ovicidal and larvicidal activities. In particular, a tert-butylphenyl-substituent compound possessed better larvicidal activity (LC50 = 0.022 ± 0.009 mg/L) and ovicidal activity (0.044 ± 0.020 mg/L) than etoxazole (0.091 ± 0.051 and 0.095 ± 0.059 mg/L, respectively). Given its outstanding bioactivities, this compound deserves further attention as a pesticide candidate.
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Affiliation(s)
- Shilin Chen
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Yu Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071 , People's Republic of China
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94
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Janda J, Nödler K, Scheurer M, Happel O, Nürenberg G, Zwiener C, Lange FT. Closing the gap - inclusion of ultrashort-chain perfluoroalkyl carboxylic acids in the total oxidizable precursor (TOP) assay protocol. Environ Sci Process Impacts 2019; 21:1926-1935. [PMID: 31183483 DOI: 10.1039/c9em00169g] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
An improved protocol of the total oxidizable precursor (TOP) assay was developed for precursors to C2-C14 perfluoroalkyl carboxylic acids (PFCAs) and C4-C8 and C10 perfluoroalkyl sulfonic acids (PFSAs). The proposed protocol was tested and validated for contaminated soil samples. The perfluoroalkyl acids (PFAAs) present in the soil extract solutions after oxidation with persulfate were separated from the inorganic salts by vacuum-assisted drying of the digestion solution followed by solid-liquid extraction of the PFAAs with acetonitrile from the dry residue. Ion chromatography (for C2-C4 PFCAs) and reversed phase liquid chromatography (for all other PFASs), both coupled to tandem mass spectrometry, were used for quantification. High procedural recoveries of PFAAs between 68% and 123% with RSDs between 0.2% and 25% (n = 3) were achieved. The method was validated using selected polyfluoroalkyl phosphoric acid esters (PAPs) and bis-[2-(N-ethyl perfluorooctane-1-sulfonamido)ethyl] phosphoric acid ester (diSAmPAP) as model precursors in pure solutions and in the presence of soil matrix. The oxidation led to characteristic and reproducible PFCA patterns (in the case of PAPs) or PFOA (in the case of diSAmPAP) with total reaction yields between 92 ± 4% and 123 ± 13% (n = 3). The impact of the soil matrix on transformation yields was negligible. In a soil core from a PFAS-polluted agricultural site, precursors were concentrated in the upper 40 cm with long-chain precursors being prevalent. After oxidative digestion, the total molar PFAA-concentrations increased by factors of 1.6 to 5.0. More than 40 cm below ground precursors of TFAA, PFPrA and PFBA accounted for ∼50% of the reaction products, underlining the importance of their inclusion in mass balances based on the TOP assay.
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Affiliation(s)
- Joachim Janda
- TZW: DVGW-Technologiezentrum Wasser, Karlsruhe Str. 84, 76139 Karlsruhe, Germany.
| | - Karsten Nödler
- TZW: DVGW-Technologiezentrum Wasser, Karlsruhe Str. 84, 76139 Karlsruhe, Germany.
| | - Marco Scheurer
- TZW: DVGW-Technologiezentrum Wasser, Karlsruhe Str. 84, 76139 Karlsruhe, Germany.
| | - Oliver Happel
- TZW: DVGW-Technologiezentrum Wasser, Karlsruhe Str. 84, 76139 Karlsruhe, Germany.
| | - Gudrun Nürenberg
- TZW: DVGW-Technologiezentrum Wasser, Karlsruhe Str. 84, 76139 Karlsruhe, Germany.
| | - Christian Zwiener
- Eberhard Karls University Tübingen, Environmental Analytical Chemistry, Center for Applied Geosciences (ZAG), Hölderlinstr. 12, 72074 Tübingen, Germany
| | - Frank Thomas Lange
- TZW: DVGW-Technologiezentrum Wasser, Karlsruhe Str. 84, 76139 Karlsruhe, Germany.
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95
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Wang Y, Liang J, Luan G, Zhang S, Zhuoma Y, Xie J, Zhou W. Quantitative Analyses of Nine Phenolic Compounds and Their Antioxidant Activities from Thirty-Seven Varieties of Raspberry Grown in the Qinghai-Tibetan Plateau Region. Molecules 2019; 24:molecules24213932. [PMID: 31683568 PMCID: PMC6864844 DOI: 10.3390/molecules24213932] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 11/16/2022] Open
Abstract
In this work, an efficient method for the rapid extraction and separation of antioxidant phenols was developed and optimized. The method was then applied to extract and separate nine phenols from 37 varieties of raspberry, in which their antioxidant activities were further investigated. First, the extraction was conducted using ultra-sonication, which was then further separated using reversed-phase high-performance liquid chromatography/ultraviolet (RP-HPLC/UV) analysis. In this step, several key parameters (volume of the extraction reagent, time of extraction, and the temperature of extraction) affecting its efficiency were investigated and optimized using the response surface methodology (RSM) combined with the Box–Behnken design (BBD) so that the optimal conditions were obtained. According to the overall results of the optimization study, the optimal conditions were chosen as follows: volume of extraction reagent = 2.0 mL, time of extraction = 50.0 min, and temperature of extraction = 50 °C. The optimal conditions were then applied to extract nine phenols, including gallic acid, catechin, chlorogenic acid, vanillic acid, syringic acid, cumaric acid, ferulic acid, rosemary acid, and quercetin from 37 raspberry varieties. The extracted phenols were characterized and their antioxidant activities, including DPPH− and ABTS− free radical scavenging and intracellular reactive oxygen species (ROS) activity, using HepG2 cells as the model, were subsequently studied. The findings suggested that although their contents varied among most raspberry varieties, these phenols significantly contributed toward their antioxidant capacity and scavenging intracellular ROS activities. This study provides a scientific and theoretical basis for the selection of raspberry varieties and product development in Qinghai province.
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Affiliation(s)
- Yuwei Wang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China.
| | - Jian Liang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China.
| | - Guangxiang Luan
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810016, China.
| | - Shoude Zhang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China.
| | - Yixi Zhuoma
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China.
| | - Jiuxiang Xie
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China.
| | - Wu Zhou
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China.
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96
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Pârvu M, Moţ CA, Pârvu AE, Mircea C, Stoeber L, Roşca-Casian O, Ţigu AB. Allium sativum Extract Chemical Composition, Antioxidant Activity and Antifungal Effect against Meyerozyma guilliermondii and Rhodotorula mucilaginosa Causing Onychomycosis. Molecules 2019; 24:molecules24213958. [PMID: 31683743 PMCID: PMC6865177 DOI: 10.3390/molecules24213958] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 10/28/2019] [Accepted: 10/29/2019] [Indexed: 01/10/2023] Open
Abstract
Onychomycosis is a major health problem due to its chronicity and resistance to therapy. Because some cases associate paronychia, any therapy must target the fungus and the inflammation. Medicinal plants represent an alternative for onychomycosis control. In the present work the antifungal and antioxidant activities of Alium sativum extract against Meyerozyma guilliermondii (Wick.) Kurtzman & M. Suzuki and Rhodotorula mucilaginosa (A. Jörg.) F.C. Harrison, isolated for the first time from a toenail onychomycosis case, were investigated. The fungal species were confirmed by DNA molecular analysis. A. sativum minimum inhibitory concentration (MIC) and ultrastructural effects were examined. At the MIC concentration (120 mg/mL) the micrographs indicated severe structural alterations with cell death. The antioxidant properties of the A. sativum extract were evaluated is a rat turpentine oil induced inflammation, and compared to an anti-inflammatory drug, diclofenac, and the main compound from the extract, allicin. A. sativum reduced serum total oxidative status, malondialdehyde and nitric oxide production, and increased total thiols. The effects were comparable to those of allicin and diclofenac. In conclusion, the garlic extract had antifungal effects against M. guilliermondii and R. mucilaginosa, and antioxidant effect in turpentine-induced inflammation. Together, the antifungal and antioxidant activities support that A. sativum is a potential alternative treatment in onychomycosis.
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Affiliation(s)
- Marcel Pârvu
- Department of Biology, Faculty of Biology and Geology, Babeș-Bolyai University, 42 Republicii Street, 400015 Cluj-Napoca, Romania.
| | - Cătălin A Moţ
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania.
| | - Alina E Pârvu
- Department of Pathophysiology, Faculty of Medicine, Iuliu Haţieganu University of Medicine and Pharmacy, 3 Victor Babeş Street, 400012 Cluj-Napoca, Romania.
| | - Cristina Mircea
- Department of Biology, Faculty of Biology and Geology, Babeș-Bolyai University, 42 Republicii Street, 400015 Cluj-Napoca, Romania.
| | - Leander Stoeber
- Faculty of Medicine, Iuliu Haţieganu University of Medicine and Pharmacy, 3 Victor Babeş Street, 400012 Cluj-Napoca, Romania.
| | - Oana Roşca-Casian
- Alexandru-Borza Botanical Garden, Babeș-Bolyai University, 42 Republicii Street, 400015 Cluj-Napoca, Romania.
| | - Adrian B Ţigu
- Department of Biology, Faculty of Biology and Geology, Babeș-Bolyai University, 42 Republicii Street, 400015 Cluj-Napoca, Romania.
- MEDFUTURE-Research Center for Advanced Medicine, "Iuliu-Hatieganu" University of Medicine and Pharmacy, 23 Marinescu Street, 400337 Cluj-Napoca, Romania.
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97
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Ishida YI, Ichinowatari Y, Nishimoto S, Koike S, Ishii K, Ogasawara Y. Differential oxidation processes of peroxiredoxin 2 dependent on the reaction with several peroxides in human red blood cells. Biochem Biophys Res Commun 2019; 518:685-690. [PMID: 31472963 DOI: 10.1016/j.bbrc.2019.08.108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 08/20/2019] [Indexed: 11/18/2022]
Abstract
Peroxiredoxins (Prxs) detoxify hydrogen peroxide (H2O2), peroxynitrite, and various organic hydroperoxides. However, the differential oxidative status of Prxs reacted with each peroxide remains unclear. In the present study, we focused on the oxidative alteration of Prxs and demonstrated that, in human red blood cells (RBCs), peroxiredoxin 2 (Prx2) is readily reactive with H2O2, forming disulfide dimers, but was not easily hyperoxidized. In contrast, Prx2 was highly sensitive to the relatively hydrophobic oxidants, such as tert-butyl hydroperoxide (t-BHP) and cumene hydroperoxide. These peroxides hyperoxidized Prx2 into oxidatively damaged forms in RBCs. The t-BHP treatment formed hyperoxidized Prx2 in a dose-dependent manner. When organic hydroperoxide-treated RBC lysates were subjected to reverse-phase high performance liquid chromatography, two peaks derived from hyperoxidized Prx2 appeared along with the decrease of that corresponding to native Prx2. Liquid chromatography-tandem mass spectrometry analysis clearly showed that hyperoxidation to sulfonic acid (-SO3H) at Cys-51 residue was more advanced in a newfound hyperoxidized Prx2 compared to another hydrophobic hyperoxidized form previously identified. These results indicate that irreversible hyperoxidation of the Prx2 monomer in RBCs was easily caused by organic hydroperoxide but not H2O2. Thus, it is important to detect the hyperoxidation of Prx2 into sulfinic or sulfonic acid derivates of Cys-51 because hyperoxidized Prx2 is a potential marker of oxidative injury caused by organic hydroperoxides in human RBCs.
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Affiliation(s)
- Yo-Ichi Ishida
- Departments of Molecular and Cellular Biochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Yuko Ichinowatari
- Departments of Hygienic Chemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Shoichi Nishimoto
- Departments of Analytical Biochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Shin Koike
- Departments of Analytical Biochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Kazuyuki Ishii
- Departments of Hygienic Chemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, 204-8588, Japan
| | - Yuki Ogasawara
- Departments of Analytical Biochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, 204-8588, Japan.
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98
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Miller S, Weiss AA, Heineman WR, Banerjee RK. Electroosmotic flow driven microfluidic device for bacteria isolation using magnetic microbeads. Sci Rep 2019; 9:14228. [PMID: 31578397 PMCID: PMC6775156 DOI: 10.1038/s41598-019-50713-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 07/31/2019] [Indexed: 12/13/2022] Open
Abstract
The presence of bacterial pathogens in water can lead to severe complications such as infection and food poisoning. This research proposes a point-of-care electroosmotic flow driven microfluidic device for rapid isolation and detection of E. coli in buffered solution (phosphate buffered saline solution). Fluorescent E. coli bound to magnetic microbeads were driven through the microfluidic device using both constant forward flow and periodic flow switching at concentrations ranging from 2 × 105 to 4 × 107 bacteria/mL. A calibration curve of fluorescent intensity as a function of bacteria concentration was created using both constant and switching flow, showing an increase in captured fluorescent pixel count as concentration increases. In addition, the use of the flow switching resulted in a significant increase in the capture efficiency of E. coli, with capture efficiencies up to 83% ± 8% as compared to the constant flow capture efficiencies (up to 39% ± 11%), with a sample size of 3 µL. These results demonstrate the improved performance associated with the use of the electroosmotic flow switching system in a point-of-care bacterial detection assay.
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Affiliation(s)
- Samuel Miller
- Department of Mechanical and Materials Engineering, University of Cincinnati, 598 Rhodes Hall, University of Cincinnati, Cincinnati, OH, 45221, USA
| | - Alison A Weiss
- Department of Molecular Genetics, Biochemistry & Microbiology, University of Cincinnati, 2254 Medical Sciences Building, 231 Albert Sabin Way, Cincinnati, OH, 45267, USA
| | - William R Heineman
- Department of Chemistry, University of Cincinnati, 120 Crosley Tower, PO Box 210172, Cincinnati, OH, 45221, USA
| | - Rupak K Banerjee
- Department of Mechanical and Materials Engineering, University of Cincinnati, 593 Rhodes Hall, ML 0072, University of Cincinnati, Cincinnati, OH, 45221, USA.
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99
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Liu F, Lin L, Zhang Y, Wang Y, Sheng S, Xu C, Tian H, Chen X. A Tumor-Microenvironment-Activated Nanozyme-Mediated Theranostic Nanoreactor for Imaging-Guided Combined Tumor Therapy. Adv Mater 2019; 31:e1902885. [PMID: 31423690 DOI: 10.1002/adma.201902885] [Citation(s) in RCA: 184] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/20/2019] [Indexed: 06/10/2023]
Abstract
Activatable theranostic agents that can be activated by tumor microenvironment possess higher specificity and sensitivity. Here, activatable nanozyme-mediated 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) loaded ABTS@MIL-100/poly(vinylpyrrolidine) (AMP) nanoreactors (NRs) are developed for imaging-guided combined tumor therapy. The as-constructed AMP NRs can be specifically activated by the tumor microenvironment through a nanozyme-mediated "two-step rocket-launching-like" process to turn on its photoacoustic imaging signal and photothermal therapy (PTT) function. In addition, simultaneously producing hydroxyl radicals in response to the high H2 O2 level of the tumor microenvironment and disrupting intracellular glutathione (GSH) endows the AMP NRs with the ability of enhanced chemodynamic therapy (ECDT), thereby leading to more efficient therapeutic outcome in combination with tumor-triggered PTT. More importantly, the H2 O2 -activated and acid-enhanced properties enable the AMP NRs to be specific to tumors, leaving the normal tissues unharmed. These remarkable features of AMP NRs may open a new avenue to explore nanozyme-involved nanoreactors for intelligent, accurate, and noninvasive cancer theranostics.
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Affiliation(s)
- Feng Liu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
| | - Lin Lin
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
| | - Ying Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
| | - Yanbing Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
- University of Science and Technology of China, Hefei, 230026, China
| | - Shu Sheng
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
| | - Caina Xu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
| | - Huayu Tian
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
- University of Science and Technology of China, Hefei, 230026, China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
- University of Science and Technology of China, Hefei, 230026, China
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100
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Ferreira RM, Ramalho Ribeiro A, Patinha C, Silva AMS, Cardoso SM, Costa R. Water Extraction Kinetics of Bioactive Compounds of Fucus vesiculosus. Molecules 2019; 24:E3408. [PMID: 31546839 PMCID: PMC6766934 DOI: 10.3390/molecules24183408] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/12/2019] [Accepted: 09/12/2019] [Indexed: 11/16/2022] Open
Abstract
Brown macroalgae, particularly those from Fucus genus, are a rich and balanced source of bioactive nutrients and phytochemicals, such as dietary fibres (fucoidans, laminarins, and/or alginates), phlorotannins, and fucoxanthin, and some minerals, such as iodine, which have been demonstrated to possess numerous health-promoting properties. In fact, aqueous extracts of Fucus vesiculosus have been used as food supplements due to its rich content in bioactive compounds, though no study has been published on the optimization of this operation. Therefore, this study aimed to evaluate the impact of different extraction temperatures (25 °C, 50 °C, 75 °C, 100 °C, and 120 °C) and times (5 min, 1 h, 2 h, and 4 h) on the recovery of those bioactive compounds. The temperature was observed to positively influence the extraction of crude mass and of fucose polysaccharides only at 75 °C and above, and of iodine extraction at 50 °C and above. At these temperatures, time also showed to increase yields. Yields of crude extract, fucose, and iodine were successfully mathematically modelled with a power law, and its maximum yields were obtained at the highest temperature studied (120 °C) and longest extraction time (4 h). Iodine yield at these conditions provided extracts with relevant content to contribute to the recommended daily ingestion. Phlorotannins were significantly recovered at 120 °C though evidence of degradation was observed during time.
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Affiliation(s)
- Ricardo M Ferreira
- QOPNA and LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ana Ramalho Ribeiro
- Polytechnic Institute of Coimbra, College of Agriculture, Research Centre for Natural Resources, Environment and Society (CERNAS), Bencanta, 3045-601 Coimbra, Portugal
| | - Carla Patinha
- GEOBIOTEC, Department of Geoscience, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Artur M S Silva
- QOPNA and LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Susana M Cardoso
- QOPNA and LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Rui Costa
- Polytechnic Institute of Coimbra, College of Agriculture, Research Centre for Natural Resources, Environment and Society (CERNAS), Bencanta, 3045-601 Coimbra, Portugal.
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