1
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Optical absorption measurements and optoelectronic DFT calculations for ethanol solvated quercetin and anhydrous/hydrated quercetin crystals. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2
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Aluminum(III), iron(III) and copper(II) complexes of luteolin: Stability, antioxidant, and anti-inflammatory properties. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117895] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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2-Hydroxy-5-(3,5,7-trihydroxy-4-oxo-4H-chromen-2-yl)phenyl (E)-3-(4-hydroxy-3-methoxyphenyl)acrylate: Synthesis, In Silico Analysis and In Vitro Pharmacological Evaluation. MOLBANK 2021. [DOI: 10.3390/m1258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Quercetin and ferulic acid are two phytochemicals extensively represented in the plant kingdom and daily consumed in considerable amounts through diets. Due to a common phenolic structure, these two molecules share several pharmacological properties, e.g., antioxidant and free radical scavenging, anti-cancer, anti-inflammatory, anti-arrhythmic, and vasorelaxant. The aim of the present work was the combination of the two molecules in a single chemical entity, conceivably endowed with more efficacious vasorelaxant activity. Preliminary in silico studies herein described suggested that the new hybrid compound bound spontaneously and with high affinity on the KCa1.1 channel. Thus, the synthesis of the 3′-ferulic ester derivative of quercetin was achieved and its structure confirmed by 1H- and 13C-NMR spectra, HSQC and HMBC experiments, mass spectrometry, and elementary analysis. The effect of the new hybrid compound on vascular KCa1.1 and CaV1.2 channels revealed a partial loss of the stimulatory activity that characterizes the parent compound quercetin. Therefore, further studies are necessary to identify a better strategy to improve the vascular properties of this flavonoid.
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4
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Anghel N, Dinu MV, Zaltariov M, Pamfil D, Spiridon I. New cellulose-collagen-alginate materials incorporated with quercetin, anthocyanins and lipoic acid. Int J Biol Macromol 2021; 181:30-40. [PMID: 33771542 DOI: 10.1016/j.ijbiomac.2021.03.120] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 03/04/2021] [Accepted: 03/21/2021] [Indexed: 12/24/2022]
Abstract
Herein we present a new biomaterial based on cellulose, collagen and sodium alginate which served as a matrix for the incorporation of bioactive substances with antioxidant properties. Compared with pure cellulose hydrogels, the compressive strength and the elastic modulus of cellulose-collagen-alginate hydrogels were significantly enhanced, thus the compressive strength increased from 0.256 kPa to 6.91 kPa, while the elastic modulus increased from 0.0023 kPa to 0.115 kPa at 30% strain level. The release kinetic of all drugs through matrix components was done according to the Korsmeyer-Peppas model with a Fickian diffusion. The presence of bioactive principles, quercetin, lipoic acid and anthocyanins, gives biomaterials an antioxidant capacity on average 30% higher compared to the base matrix. The mechanical resistance, mucoadhesiveness, bioadhesiveness, release kinetic, and antioxidant capacity of active principles, recommend these biomaterials for the manufacture of transdermal drug delivery devices.
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Affiliation(s)
- Narcis Anghel
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica-Vodă 41, 700487 Iași, Romania.
| | - Maria Valentina Dinu
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica-Vodă 41, 700487 Iași, Romania
| | - Mirela Zaltariov
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica-Vodă 41, 700487 Iași, Romania
| | - Daniela Pamfil
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica-Vodă 41, 700487 Iași, Romania
| | - Iuliana Spiridon
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica-Vodă 41, 700487 Iași, Romania
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5
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Antioxidant and antimicrobial material by grafting of L-arginine onto enzymatic poly(gallic acid). MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111650. [PMID: 33579431 DOI: 10.1016/j.msec.2020.111650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 11/20/2022]
Abstract
Microwave-mediated grafting of L-Arg onto naturally derived and stable multiradical poly(gallic acid) (PGAL) in aqueous media has been successfully achieved. This polymeric material has no adverse effect in human cells as there is no hemolytic activity upon MTT and Neutral Red assays. The analytical and computational characterization studies carried out in this study describe a helical molecular structure with random incorporation of L-Arginine pendant groups from PGAL's backbone. The antioxidant properties of the precursor polymer are preserved as proved by the elimination of stable DPPH and hydroxyl radical scavenging, as well as the FRAP and ORAC assays. Regarding the latter, the oxygen radical inhibition is enhanced compared to PGAL, which is attributed to the guanidyl moieties. PGAL-g-L-Arg displays antimicrobial activity against Gram (+) Listeria monocytogenes and Staphylococcus aureus strains with a MIC of 0.8 g/L and a bacteriostatic effect against Gram (-) Escherichia coli. Additionally, scanning electron and confocal fluorescence microscopies as well as crystal violet colorimetric assay demonstrate that the mechanism involved in the bacterial inhibition is related to the formation of porous channels on the membrane, which is discussed according to the helical secondary structure of the polymer and the amino acid guanidyl moieties interacting to bacterial membranes.
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6
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Saik AYH, Lim YY, Stanslas J, Choo WS. Biosynthesis of Quercetin Palmitate Esters and Evaluation of their Physico‐Chemical Properties and Stability. J AM OIL CHEM SOC 2020. [DOI: 10.1002/aocs.12404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Amy Yi Hsan Saik
- Department of Pre‐clinical Sciences, Faculty of Medicine and Health Sciences Universiti Tunku Abdul Rahman Selangor 43000 Malaysia
| | - Yau Yan Lim
- School of Science Monash University Malaysia Selangor 47500 Malaysia
| | - Johnson Stanslas
- Department of Medicine, Faculty of Medicine and Health Sciences Universiti Putra Malaysia Selangor 43400 Malaysia
| | - Wee Sim Choo
- School of Science Monash University Malaysia Selangor 47500 Malaysia
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7
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Alizadeh A, Bagherinejad A. A Catalyst‐Free Synthetic Route to Modified Isoflavone
via
Multi‐Component Reaction. ChemistrySelect 2020. [DOI: 10.1002/slct.201904674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Abdolali Alizadeh
- Department of ChemistryTarbiat Modares University, P.O. Box 14115-175 Tehran Iran
| | - Akram Bagherinejad
- Department of ChemistryTarbiat Modares University, P.O. Box 14115-175 Tehran Iran
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8
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Alaoui MAE, Fartah SE, Alaoui N, Fahime EME, Habsaoui A. Molecular docking analysis of flavonoid compounds with HIV-1 Reverse transcriptase for the identification of potential effective inhibitors. Bioinformation 2019; 15:646-656. [PMID: 31787814 PMCID: PMC6859701 DOI: 10.6026/97320630015646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/07/2019] [Accepted: 10/08/2019] [Indexed: 11/23/2022] Open
Abstract
It is of interest to elucidate the binding mode analysis of 18 sulphonated flavones in the non nucleoside inhibitory binding pocket of the HIV-1 reverse transcriptase (PDB ID: 1RTD).
We further compared them with the known Non Nucleosidic Reverse Transcriptase Inhibitors (NNRTI) drug molecules such as delaviridine, nevirapine and etravirine. Molecular docking studies
of sulphonated flavones were performed in the binding pocket of reverse transcriptase using the PatchDock server. The flavones have different binding energies with RT and the atomic contact
energy (ACE) value of sulfonated flavones range from-389 to-231 Kcal/mol while docking of the commercialized NNRTI showed the ACE value range from -486 to -224 Kcal/mol. This shows that
most sulfonated flavones have ACE similar to the known NNRTI. Thus, seven compounds (FS-6, FS-7, FS-8, FS-9, FS-14, FS-15, FS-17) were reported as potent, selective, orally bio available,
and nontoxic lead based on ADMET screening and effective binding analysis in the active site of the reverse transcriptase (PDB ID: 1RTD) for further consideration. We further document that
compounds (FS-1, FS-10, FS-4 and FS-12) have unfavorable binding features to be considered as leads.
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Affiliation(s)
- My Abdelaziz El Alaoui
- Functional Genomic Platform, UATRS, Center for Scientific and Technical Research [CNRST], ZIP 10000 Rabat, Morocco.,Laboratory of Genetics and Biometry, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Souad El Fartah
- engineering and environment laboratory, Modeling and Application LIMEMA, Faculty of Science - University Ibn Tofail ,Kenitra .B.P 133 Kenitra 14000, Morocco
| | - Najwa Alaoui
- Research Team in Molecular Virology and Oncobiology, Faculty of Medicine and Pharmacy, University Mohammed V in Rabat, Av. Mohamed Belarbi El Alaoui, ZIP 6203, Rabat, Morocco
| | - El Mostapha El Fahime
- Functional Genomic Platform, UATRS, Center for Scientific and Technical Research [CNRST], ZIP 10000 Rabat, Morocco
| | - Amar Habsaoui
- engineering and environment laboratory, Modeling and Application LIMEMA, Faculty of Science - University Ibn Tofail ,Kenitra .B.P 133 Kenitra 14000, Morocco
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9
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Ali HM, Ali IH. Structure-antioxidant activity relationships, QSAR, DFT calculation, and mechanisms of flavones and flavonols. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02452-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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10
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Brovarets’ OO, Hovorun DM. Conformational diversity of the quercetin molecule: a quantum-chemical view. J Biomol Struct Dyn 2019; 38:2817-2836. [DOI: 10.1080/07391102.2019.1656671] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ol’ha O. Brovarets’
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Dmytro M. Hovorun
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- Department of Molecular Biotechnology and Bioinformatics, Institute of High Technologies, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
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11
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Arvand M, Daneshvar S. Facile Strategy for Preparation of Core/Shell-structured Zinc Oxide-magnetite Hybrids for Quantification of Quercetin and Rutin in Pharmaceutical Herbs. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s106193481909003x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Brovarets’ OO, Hovorun DM. Conformational transitions of the quercetin molecule via the rotations of its rings: a comprehensive theoretical study. J Biomol Struct Dyn 2019; 38:2865-2883. [DOI: 10.1080/07391102.2019.1645734] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ol’ha O. Brovarets’
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- Department of Pharmacology, Bohomolets National Medical University, Kyiv, Ukraine
| | - Dmytro M. Hovorun
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- Department of Molecular Biotechnology and Bioinformatics, Institute of High Technologies, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
- Department of Pathophysiology, Bohomolets National Medical University, Kyiv, Ukraine
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13
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Synthesis and characterization of core–shell magnetic molecularly imprinted polymers for selective recognition and determination of quercetin in apple samples. Food Chem 2019; 287:100-106. [DOI: 10.1016/j.foodchem.2019.02.069] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/28/2019] [Accepted: 02/15/2019] [Indexed: 12/16/2022]
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14
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Gu Q, Duan G, Yu X. Bioconversion of Flavonoid Glycosides from Hippophae rhamnoides Leaves into Flavonoid Aglycones by Eurotium amstelodami. Microorganisms 2019; 7:E122. [PMID: 31060344 PMCID: PMC6560391 DOI: 10.3390/microorganisms7050122] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 04/30/2019] [Accepted: 04/30/2019] [Indexed: 01/10/2023] Open
Abstract
The flowering process has been reported to play crucial roles in improving the flavor and efficacy of fermented tea. Hippophae rhamnoides leaves containing many beneficial ingredients are a suitable plant source for tea processing. In this study, we isolated a β-glucosidase-producing fungus Eurotium amstelodami BSX001 from the fermented tea and used Hippophae rhamnoides leaves (HRL) as a substrate to explore the detailed process of bioconversion of some important functional factors. The results show that the contents of total phenolic compounds and flavonoids increased significantly after seven days, especially flavonoid aglycones (e.g., quercetin, kaempferol, and isorhamnetin). Such compounds greatly enhance the antioxidative activity of fermented products. Metabolic analysis of the standard compounds (rutin, quercetin-3-glucoside, kaempferol-3-glucoside, quercetin, isorhamnetin-3-glucoside, isorhamnetin, and kaempferol) further confirmed the effective biotransformation by E. amstelodami. Mechanisms of the bioconversion could be involved in deglycosylation, dihydroxylation, and O-methylation. Our findings expand the understanding of tea fermentation process and provide further guidance for the fermented tea industry.
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Affiliation(s)
- Qiuya Gu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Guoliang Duan
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Xiaobin Yu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, China.
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15
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Normaya E, Fazli M, Norazmi Ahmad M, Ku Bulat KH. COSMO-RS and DFT studies on development and optimization of quercetin as a chemosensor for Fe3+ recognition in aqueous medium. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.070] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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16
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Ahmad T, Suzuki YJ. Juglone in Oxidative Stress and Cell Signaling. Antioxidants (Basel) 2019; 8:antiox8040091. [PMID: 30959841 PMCID: PMC6523217 DOI: 10.3390/antiox8040091] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/23/2019] [Accepted: 04/01/2019] [Indexed: 12/22/2022] Open
Abstract
Juglone (5-hydroxyl-1,4-naphthoquinone) is a phenolic compound found in walnuts. Because of the antioxidant capacities of phenolic compounds, juglone may serve to combat oxidative stress, thereby protecting against the development of various diseases and aging processes. However, being a quinone molecule, juglone could also act as a redox cycling agent and produce reactive oxygen species. Such prooxidant properties of juglone may confer health effects, such as by killing cancer cells. Further, recent studies revealed that juglone influences cell signaling. Notably, juglone is an inhibitor of Pin1 (peptidyl-prolyl cis/trans isomerase) that could regulate phosphorylation of Tau, implicating potential effects of juglone in Alzheimer’s disease. Juglone also activates mitogen-activated protein kinases that could promote cell survival, thereby protecting against conditions such as cardiac injury. This review describes recent advances in the understanding of the effects and roles of juglone in oxidative stress and cell signaling.
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Affiliation(s)
- Taseer Ahmad
- College of Pharmacy, University of Sargodha, Sargodha, Punjab 40100, Pakistan.
| | - Yuichiro J Suzuki
- Department of Pharmacology and Physiology, Georgetown University Medical Center, Washington, DC 20007, USA.
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17
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Nikitenko NG, Shestakov AF. H–D exchange between quercetin and solvent in the presence of AuI chloride complexes with DMSO: quantum chemical modeling. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2291-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Asfaram A, Ghaedi M, Javadian H, Goudarzi A. Cu- and S- @SnO 2 nanoparticles loaded on activated carbon for efficient ultrasound assisted dispersive µSPE-spectrophotometric detection of quercetin in Nasturtium officinale extract and fruit juice samples: CCD-RSM design. ULTRASONICS SONOCHEMISTRY 2018; 47:1-9. [PMID: 29908597 DOI: 10.1016/j.ultsonch.2018.04.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 04/06/2018] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
A simple, rapid, and efficient method of dispersive micro solid phase extraction (D-μ-SPE) combined with UV-Vis spectrophotometry via ultrasound-assisted (UA) was applied for the determination and preconcentration of quercetin in extract of watercress (Nasturtium officinale), fruit juice and water samples. The sorbent in this method was synthesized by doping copper and sulfide into the tetragonal structure of SnO2-nanoparticles (Cu- and S- @SnO2-NPs) and subsequently loading it on activated carbon (AC). The D-μ-SPE parameters with direct effect on the extraction efficiency of the targeted analyte, such as sample pH, volume of eluent, sorbent mass and ultrasound time were optimized using central composite design method. Under optimized conditions, the calibration graph for quercetin was linear in the range of 20-4000 ng mL-1; the limit of detection and quantitation were 4.35 and 14.97 ng mL-1, respectively and the enrichment factor was 95.24. Application of this method to analyze spiked extract, fruit juice and water samples resulted in acceptable recovery values ranging from 90.3% to 97.28% with intra-day and inter-day relative standard deviation values lower than 6.0% in all cases. Among the equilibrium isotherms tested, Langmuir was found to be the best fitted model with maximum sorption capacity of 39.37 mg g-1, suggesting a homogeneous mode of sorption for quercetin.
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Affiliation(s)
- Arash Asfaram
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.
| | - Mehrorang Ghaedi
- Department of Chemistry, Yasouj University, Yasouj 75918-74831, Iran.
| | - Hamedreza Javadian
- Universitat Politècnica de Catalunya, Department of Chemical Engineering, ETSEIB, Diagonal 647, 08028 Barcelona, Spain
| | - Alireza Goudarzi
- Department of Polymer Engineering, Golestan University, Gorgan 49188-88369, Iran
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19
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Vanden Braber NL, Paredes AJ, Rossi YE, Porporatto C, Allemandi DA, Borsarelli CD, Correa SG, Montenegro MA. Controlled release and antioxidant activity of chitosan or its glucosamine water-soluble derivative microcapsules loaded with quercetin. Int J Biol Macromol 2018; 112:399-404. [DOI: 10.1016/j.ijbiomac.2018.01.085] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/29/2017] [Accepted: 01/13/2018] [Indexed: 10/18/2022]
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20
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Antioxidant capacity of phenolic compounds on human cell lines as affected by grape-tyrosinase and Botrytis-laccase oxidation. Food Chem 2017; 229:779-789. [DOI: 10.1016/j.foodchem.2017.03.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 02/14/2017] [Accepted: 03/01/2017] [Indexed: 02/07/2023]
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21
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Saik AYH, Lim YY, Stanslas J, Choo WS. Enzymatic synthesis of quercetin oleate esters using Candida antarctica lipase B. Biotechnol Lett 2016; 39:297-304. [DOI: 10.1007/s10529-016-2246-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 10/24/2016] [Indexed: 12/01/2022]
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22
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La Rocca MV, Rutkowski M, Ringeissen S, Gomar J, Frantz MC, Ngom S, Adamo C. Benchmarking the DFT methodology for assessing antioxidant-related properties: quercetin and edaravone as case studies. J Mol Model 2016; 22:250. [PMID: 27686561 DOI: 10.1007/s00894-016-3118-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 09/02/2016] [Indexed: 12/14/2022]
Abstract
The overall objective was to identify an accurate computational electronic method to virtually screen phenolic compounds through their antioxidant and free-radical scavenging activity. The impact of a key parameter of the density functional theory (DFT) approach was studied. Performances of the 21 most commonly used exchange-correlation functionals are thus detailed in the evaluation of the main energetic parameters related to the activities of two prototype antioxidants, namely quercetin and edaravone, is reported. These functionals have been chosen among those belonging to three different families of hybrid functionals, namely global, range separated, and double hybrids. Other computational parameters have also been considered, such as basis set and solvent effects. The selected parameters, namely bond dissociation enthalpy (BDE), ionization potential (IP), and proton dissociation enthalpy (PDE) allow a mechanistic evaluation of the antioxidant activities of free radical scavengers. Our results show that all the selected functionals provide a coherent picture of these properties, predicting the same order of BDEs and PDEs. However, with respect to the reference values, the errors found at CBS-Q3 level significantly vary with the functional. Although it is difficult to evidence a global trend from the reported data, it clearly appears that LC-ωPBE, M05-2X, and M06-2X are the most suitable approaches for the considered properties, giving the lowest cumulative mean absolute errors. These methods are therefore suggested for an accurate and fast evaluation of energetic parameters related to an antioxidant activity via free radical scavenging.
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Affiliation(s)
- Mario Vincenzo La Rocca
- Chimie ParisTech CNRS, Institut de Recherche de Chimie, PSL Research University, 75005, Paris, France.,Dipartimento di Scienza ed Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100, Como, Italy
| | - Malvina Rutkowski
- Chimie ParisTech CNRS, Institut de Recherche de Chimie, PSL Research University, 75005, Paris, France
| | - Stéphanie Ringeissen
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, 93601, Aulnay-sous-Bois, France
| | - Jérôme Gomar
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, 93601, Aulnay-sous-Bois, France
| | - Marie-Céline Frantz
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, 93601, Aulnay-sous-Bois, France
| | - Saliou Ngom
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, 93601, Aulnay-sous-Bois, France
| | - Carlo Adamo
- Chimie ParisTech CNRS, Institut de Recherche de Chimie, PSL Research University, 75005, Paris, France. .,Institut Universitaire de France, 103 Boulevard Saint Michel, 75005, Paris, France.
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23
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Concerted two-proton–coupled electron transfer from catechols to superoxide via hydrogen bonds. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.05.034] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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24
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Fu L, Sun Y, Ding L, Wang Y, Gao Z, Wu Z, Wang S, Li W, Bi Y. Mechanism evaluation of the interactions between flavonoids and bovine serum albumin based on multi-spectroscopy, molecular docking and Q-TOF HR-MS analyses. Food Chem 2016; 203:150-157. [DOI: 10.1016/j.foodchem.2016.01.105] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 11/23/2015] [Accepted: 01/25/2016] [Indexed: 11/17/2022]
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25
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Reina M, Martínez A. Is Silybin the Best Free Radical Scavenger Compound in Silymarin? J Phys Chem B 2016; 120:4568-78. [PMID: 27149000 DOI: 10.1021/acs.jpcb.6b02807] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Silymarin is a natural mixture with beneficial properties for health, specifically due to its antiradical characteristics. The major components of this mixture are silybin (SIL), silychristin (SILYC), isosilybin (ISOSIL), silydianin (SILYD), and taxifolin (TAX). In this report, the electronic properties of these substances are investigated using density functional theory calculations, mainly in order to fully understand the free radical scavenger properties of these compounds. Optimized geometries and Raman spectra are reported. These results could be experimentally useful for identifying some of the major components of the mixture. The relative abundance of deprotonated species under physiological conditions is also included. The free radical scavenger capacity is studied in relation to three mechanisms: the single electron transfer (SET), the radical adduct formation (RAF), and the hydrogen atom transfer (HAT). According to this investigation, the HAT mechanism is the most efficient mechanism for scavenging free radicals for these compounds followed by the RAF mechanism where intramolecular hydrogen bonds are formed in order to stabilize the (•)OOH free radical. A particularly important factor is that none of the compounds being studied showed an outstanding antiradical capacity performance compared to the others. In this sense, silymarin is an interesting mixture with antiradical properties and we now know that one single component should be as effective as the mixture.
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Affiliation(s)
- Miguel Reina
- Departamento de Materiales de Baja Dimensionalidad Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México , Circuito Exterior s/n, CU, P.O. Box 70-360, Coyoacán, 04510 Ciudad de México, México
| | - Ana Martínez
- Departamento de Materiales de Baja Dimensionalidad Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México , Circuito Exterior s/n, CU, P.O. Box 70-360, Coyoacán, 04510 Ciudad de México, México
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Halo M, Ferrari AM, Berlier G, Miletto I, Casassa S. Experimental and first-principles IR characterization of quercetin adsorbed on a silica surface. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1854-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
For more than half a century free radical-induced alterations at cellular and organ levels have
been investigated as a probable underlying mechanism of a number of adverse health conditions. Consequently,
significant research efforts have been spent for discovering more effective and potent antioxidants /
free radical scavengers for treatment of these adverse conditions. Being by far the most used antioxidants
among natural and synthetic compounds, mono- and polyphenols have been the focus of both experimental
and computational research on mechanisms of free radical scavenging. Quantum chemical studies have provided
a significant amount of data on mechanisms of reactions between phenolic compounds and free radicals outlining a
number of properties with a key role for the radical scavenging activity and capacity of phenolics. The obtained quantum
chemical parameters together with other molecular descriptors have been used in quantitative structure-activity relationship
(QSAR) analyses for the design of new more effective phenolic antioxidants and for identification of the most useful
natural antioxidant phenolics. This review aims at presenting the state of the art in quantum chemical and QSAR studies
of phenolic antioxidants and at analysing the trends observed in the field in the last decade.
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Affiliation(s)
- Petko Alov
- Department of QSAR and Molecular Modelling, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences. 105 Acad. G. Bonchev St., 1113 Sofia, Bulgaria.
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Ghosh P, Bag S, Singha Roy A, Subramani E, Chaudhury K, Dasgupta S. Solubility enhancement of morin and epicatechin through encapsulation in an albumin based nanoparticulate system and their anticancer activity against the MDA-MB-468 breast cancer cell line. RSC Adv 2016. [DOI: 10.1039/c6ra20441d] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mor-HSA-NPs and EC-HSA-NPs are effective on MDA-MB-468 breast cancer cell lines.
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Affiliation(s)
- Pooja Ghosh
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Sudipta Bag
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Atanu Singha Roy
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Elavarasan Subramani
- School of Medical Science and Technology
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Koel Chaudhury
- School of Medical Science and Technology
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Swagata Dasgupta
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
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García G, Atilhan M, Aparicio S. Flavonol–carbon nanostructure hybrid systems: a DFT study on the interaction mechanism and UV/Vis features. Phys Chem Chem Phys 2016; 18:4760-71. [DOI: 10.1039/c5cp07629c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The properties of flavonol–carbon nanosystem hybrid materials are analyzed using computational chemistry.
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Affiliation(s)
- Gregorio García
- Department of Chemistry
- University of Burgos
- 09001 Burgos
- Spain
| | - Mert Atilhan
- Department of Chemical Engineering
- Qatar University
- Doha
- Qatar
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Reina M, Martínez A. Silybin and 2,3-Dehydrosilybin Flavonolignans as Free Radical Scavengers. J Phys Chem B 2015; 119:11597-606. [PMID: 26259041 DOI: 10.1021/acs.jpcb.5b06448] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The electronic properties of six derivatives of silybin (characterized by the absence of the 2,3 double bond) and six derivatives of 2,3-dehydrosilybin (characterized by the presence of the 2,3 double bond) have been studied by applying density functional theory to fully understand the free radical scavenger's mechanism for action and the relationship between reactivity and chemical structure. Optimized geometries, Raman spectra, and λmax values are reported, enabling us to characterize the systems. These spectra may be useful for monitoring the oxidation between silybin and 2,3-dehydrosilybin, thus providing important experimental information. The relative abundance of deprotonated species under physiological conditions is also reported. Under physiological conditions (pH 7.4), ∼70% of silybin is protonated, but 60% of 2,3-dehydrosilybin is deprotonated. The free radical scavenger capacity is analyzed in terms of two mechanisms: electron transfer and adduct formation. Deprotonated molecules are better electron donors and worse electron acceptors than non-deprotonated species. The conclusions derived from this investigation completely concur with previous experimental results. The free radical scavenging activity of 2,3-dehydrosilybin derivatives is higher than that for silybin derivatives. What was not previously considered was the importance of the deprotonated species, which is remarkable and may be important for future experiments.
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Affiliation(s)
- Miguel Reina
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México , Circuito Exterior SN, Ciudad Universitaria, CP 04510 Coyoacán, México DF, México
| | - Ana Martínez
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México , Circuito Exterior SN, Ciudad Universitaria, CP 04510 Coyoacán, México DF, México
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Borochov-Neori H, Judeinstein S, Greenberg A, Volkova N, Rosenblat M, Aviram M. Antioxidant and antiatherogenic properties of phenolic acid and flavonol fractions of fruits of 'Amari' and 'Hallawi' date (Phoenix dactylifera L.) varieties. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:3189-3195. [PMID: 25765921 DOI: 10.1021/jf506094r] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Date (Phoenix dactylifera L.) fruit phenolic-acid or flavonol fractions were examined in vitro for antioxidant and antiatherogenic properties. Two fractions of each subgroup were prepared from two date varieties, 'Amari' and 'Hallawi', by solid phase extraction on C18. The fractions were analyzed for phenolics composition by RP-HPLC and tested for ferric-reducing antioxidant power, free radical scavenging capacity, inhibition of Cu(2+)-induced LDL oxidation, and enhancement of HDL-mediated cholesterol efflux from macrophages. All four fractions exhibited variable capacities to reduce ferric ions, scavenge radicals, and inhibit LDL oxidation. Flavonol fractions were considerably better inhibitors of LDL oxidation compared to phenolic acid fractions, with IC50's of 9-31 nmol GAE mL(-1) compared to 85-116 nmol GAE mL(-1), respectively. Only the flavonol fractions stimulated cholesterol removal from macrophages. Within each subgroup, the levels of all the activities varied with fraction composition. The results demonstrated strong structure-activity relationships for date phenolics and identified date flavonols as potential antiatherogenic bioactives.
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Affiliation(s)
| | - Sylvie Judeinstein
- †Southern Arava Research and Development, M. P. Hevel Eilot 88820, Israel
| | - Amnon Greenberg
- †Southern Arava Research and Development, M. P. Hevel Eilot 88820, Israel
| | - Nina Volkova
- ‡The Lipid Research Laboratory, Rappaport Faculty of Medicine and the Rappaport Family Institute for Research in the Medical Sciences, Technion-Israel Institute of Technology, Rambam Medical Center, Haifa 31096, Israel
| | - Mira Rosenblat
- ‡The Lipid Research Laboratory, Rappaport Faculty of Medicine and the Rappaport Family Institute for Research in the Medical Sciences, Technion-Israel Institute of Technology, Rambam Medical Center, Haifa 31096, Israel
| | - Michael Aviram
- ‡The Lipid Research Laboratory, Rappaport Faculty of Medicine and the Rappaport Family Institute for Research in the Medical Sciences, Technion-Israel Institute of Technology, Rambam Medical Center, Haifa 31096, Israel
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Chiriac AP, Nita LE, Neamtu I. Possibilities of quercetin insertion into poly(N,N-dimethylacrylamide-co-3, 9-divinyl-2, 4, 8, 10-tetraoxaspiro (5.5) undecane) network. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 47:17-25. [PMID: 25492168 DOI: 10.1016/j.msec.2014.11.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/22/2014] [Accepted: 11/06/2014] [Indexed: 11/28/2022]
Abstract
The study presents the possibility of coupling quercetin into poly(N,N-dimethylacrylamide-co-3, 9-divinyl-2, 4, 8, 10-tetraoxaspiro (5.5) undecane) (PDMA-co-U) gel network through a semi-imprinted procedure in order to obtain a responsive antioxidant composite. A continuous magnetic field was used during quercetin insertion for prearranging the compounds - macromolecular matrix and quercetin - and improving the coupling efficiency of the flavonoid structure into the polymeric network. The new supramolecular systems were characterized by FTIR, SEM and thermogravimetric analyses. The dependence of the swelling degree equilibrium and particle size distribution of the studied chemical structures were also evaluated related to the experimental conditions of preparation.
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Affiliation(s)
- Aurica P Chiriac
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41-A, 700487 Iasi, Romania.
| | - Loredana E Nita
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41-A, 700487 Iasi, Romania
| | - Iordana Neamtu
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41-A, 700487 Iasi, Romania
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Javan AJ, Javan MJ. Electronic structure of some thymol derivatives correlated with the radical scavenging activity: Theoretical study. Food Chem 2014; 165:451-9. [DOI: 10.1016/j.foodchem.2014.05.073] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 04/06/2014] [Accepted: 05/14/2014] [Indexed: 11/30/2022]
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Koroleva O, Torkova A, Nikolaev I, Khrameeva E, Fedorova T, Tsentalovich M, Amarowicz R. Evaluation of the antiradical properties of phenolic acids. Int J Mol Sci 2014; 15:16351-80. [PMID: 25229820 PMCID: PMC4200783 DOI: 10.3390/ijms150916351] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 09/05/2014] [Accepted: 09/09/2014] [Indexed: 12/27/2022] Open
Abstract
Antioxidant capacity (AOC) against peroxyl radical and 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid) diammonium salt (ABTS) radical cation was measured for a series of p-hydroxybenzoic (HB) and p-hydroxycinnamic (HC) acids at different pH. Quantum-chemical computation was performed using Gaussian 3.0 software package to calculate the geometry and energy parameters of the same compounds. Significant correlations were revealed between AOC and a number of calculated parameters. The most significant AOC descriptors for the studied compounds against peroxyl radical were found to be HOMO energy, rigidity (η) and Mulliken charge on the carbon atom in m-position to the phenolic hydroxyl. The most significant descriptor of the antioxidant properties against the ABTS radical cation at рН 7.40 is electron transfer enthalpy from the phenolate ion. The mechanism of AOC realization has been proposed for HB and HC acids against both radicals.
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Affiliation(s)
- Olga Koroleva
- Bach Institute of Biochemistry of the Russian Academy of Sciences, Leninsky Prospekt, 33, bld 2, 119071 Moscow, Russia.
| | - Anna Torkova
- Bach Institute of Biochemistry of the Russian Academy of Sciences, Leninsky Prospekt, 33, bld 2, 119071 Moscow, Russia.
| | - Ilya Nikolaev
- Bach Institute of Biochemistry of the Russian Academy of Sciences, Leninsky Prospekt, 33, bld 2, 119071 Moscow, Russia.
| | - Ekaterina Khrameeva
- Department of Bioengineering and Bioinformatics, Moscow State University, GSP-1, Leninskie Hills, bld 73, 119234 Moscow, Russia.
| | - Tatyana Fedorova
- Bach Institute of Biochemistry of the Russian Academy of Sciences, Leninsky Prospekt, 33, bld 2, 119071 Moscow, Russia.
| | - Mikhail Tsentalovich
- Bach Institute of Biochemistry of the Russian Academy of Sciences, Leninsky Prospekt, 33, bld 2, 119071 Moscow, Russia.
| | - Ryszard Amarowicz
- Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences, Tuwima Street 10, 10-748 Olsztyn, Poland.
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Optimization of ionic liquid based simultaneous ultrasonic- and microwave-assisted extraction of rutin and quercetin from leaves of velvetleaf (Abutilon theophrasti) by response surface methodology. ScientificWorldJournal 2014; 2014:283024. [PMID: 25243207 PMCID: PMC4163383 DOI: 10.1155/2014/283024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 08/05/2014] [Indexed: 11/18/2022] Open
Abstract
An ionic liquids based simultaneous ultrasonic and microwave assisted extraction (ILs-UMAE) method has been proposed for the extraction of rutin (RU), quercetin (QU), from velvetleaf leaves. The influential parameters of the ILs-UMAE were optimized by the single factor and the central composite design (CCD) experiments. A 2.00 M 1-butyl-3-methylimidazolium bromide ([C4mim]Br) was used as the experimental ionic liquid, extraction temperature 60°C, extraction time 12 min, liquid-solid ratio 32 mL/g, microwave power of 534 W, and a fixed ultrasonic power of 50 W. Compared to conventional heating reflux extraction (HRE), the RU and QU extraction yields obtained by ILs-UMAE were, respectively, 5.49 mg/g and 0.27 mg/g, which increased, respectively, 2.01-fold and 2.34-fold with the recoveries that were in the range of 97.62–102.36% for RU and 97.33–102.21% for QU with RSDs lower than 3.2% under the optimized UMAE conditions. In addition, the shorter extraction time was used in ILs-UMAE, compared with HRE. Therefore, ILs-UMAE was a rapid and an efficient method for the extraction of RU and QU from the leaves of velvetleaf.
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Kabanda MM, Mammino L, Murulana LC, Mwangi HM, Mabusela WT. Antioxidant Radical Scavenging Properties of Phenolic Pent-4-En-1-Yne Derivatives Isolated FromHypoxis Rooperi. A DFT Studyin vacuoand in Solution. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2014. [DOI: 10.1080/10942912.2013.825842] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Makarova K, Łastawska K, Wagner D, Wawer I. ESR study of spin trapping in Fenton media in the presence of taxifolin. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pardo A, Mespouille L, Dubois P, Blankert B, Duez P. Molecularly Imprinted Polymers: Compromise between Flexibility and Rigidity for Improving Capture of Template Analogues. Chemistry 2014; 20:3500-9. [DOI: 10.1002/chem.201303216] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 11/24/2013] [Indexed: 01/30/2023]
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Jakhar R, Paul S, Park YR, Han J, Kang SC. 3,5,7,3',4'-pentamethoxyflavone, a quercetin derivative protects DNA from oxidative challenges: potential mechanism of action. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 131:96-103. [PMID: 24514458 DOI: 10.1016/j.jphotobiol.2014.01.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 11/08/2013] [Accepted: 01/07/2014] [Indexed: 01/10/2023]
Abstract
DNA protection is one of the most important strategies in cancer therapy. Since quercetin and its derivatives are found to be potent antioxidant agents, they are able to scavenge radicals significantly. Therefore, we focused on the DNA protection activity of 3,5,7,3',4'-pentamethoxyflavone (PMF), a quercetin derivative isolated from Kaemperia parviflora. Although, PMF was found to be a very poor antioxidant compound, still it could remarkably protect DNA from oxidative damage. DNA binding assay showed that PMF bound to the minor groove of DNA, which suggests a possible mechanism for its DNA protective effects. Cellular toxicity assay on RAW 264.7 macrophages showed this compound is very safe for therapeutic applications.
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Affiliation(s)
- Rekha Jakhar
- Department of Biotechnology, Daegu University, Kyongsan, Kyongbok 712-714, Republic of Korea
| | - Souren Paul
- Department of Biotechnology, Daegu University, Kyongsan, Kyongbok 712-714, Republic of Korea
| | - Young Rong Park
- Metalloenzyme Research Group and School of Biological Sciences, Chung-Ang University, Anseong 456-756, Republic of Korea
| | - Jaehong Han
- Metalloenzyme Research Group and School of Biological Sciences, Chung-Ang University, Anseong 456-756, Republic of Korea
| | - Sun Chul Kang
- Department of Biotechnology, Daegu University, Kyongsan, Kyongbok 712-714, Republic of Korea.
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AL-SEHEMI ABDULLAHG, IRFAN AHMAD, ALJUBIRI SALHAMANA, SHAKER KAMELHUSSEIN. COMBINED EXPERIMENTAL AND COMPUTATIONAL STUDY OF THE RADICAL SCAVENGING ACTIVITY OF LUTEOLIN. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2013. [DOI: 10.1142/s0219633613500211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The luteolin has been extracted from Euphorbia schimperiana then 1H NMR, 13C NMR and 2D NMR spectra were measured. The ground-state geometries have been computed by using density functional theory (DFT) at B3LYP/6-31G* and M06/6-31++G** level of theories. The time dependent density functional theory (TD-DFT) has been applied to compute the absorption spectra with and without solvent. The absorption spectra have been computed in methanol to check the effect of solvent using the polarized continuum model (PCM). On the basis of bond dissociation enthalpy (BDE) and the adiabatic ionization potential (IP), we have explained the antioxidant activity of luteolin and its rotamer/positional isomer. Two mechanisms have been explained for the radical scavenging processes, i.e. hydrogen atom transfer and one-electron transfer.
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Affiliation(s)
- ABDULLAH G. AL-SEHEMI
- Department of Chemistry, Faculty of Science, King Khalid University, Abha 61413, P. O. Box 9004, Saudi Arabia
- Unit of Science and Technology, Faculty of Science, King Khalid University, Abha 61413, P. O. Box 9004, Saudi Arabia
| | - AHMAD IRFAN
- Department of Chemistry, Faculty of Science, King Khalid University, Abha 61413, P. O. Box 9004, Saudi Arabia
| | - SALHA MANA ALJUBIRI
- Department of Chemistry, Faculty of Science, King Khalid University, Abha 61413, P. O. Box 9004, Saudi Arabia
| | - KAMEL HUSSEIN SHAKER
- Department of Chemistry, Faculty of Science, King Khalid University, Abha 61413, P. O. Box 9004, Saudi Arabia
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Senthil kumar K, Kumaresan R. A comparative study on the antioxidant properties of bractein and cernuoside by the DFT method. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-1024-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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43
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Nikitenko NG, Shestakov AF. Quantum chemical modeling of the activation and oxidation of light alkanes under mild conditions by Au(I) complexes with bioflavonoids. KINETICS AND CATALYSIS 2013. [DOI: 10.1134/s0023158413020110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Di Meo F, Lemaur V, Cornil J, Lazzaroni R, Duroux JL, Olivier Y, Trouillas P. Free radical scavenging by natural polyphenols: atom versus electron transfer. J Phys Chem A 2013; 117:2082-92. [PMID: 23418927 DOI: 10.1021/jp3116319] [Citation(s) in RCA: 181] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polyphenols (synthetically modified or directly provided by human diet) scavenge free radicals by H-atom transfer and may thus decrease noxious effects due to oxidative stress. Free radical scavenging by polyphenols has been widely theoretically studied from the thermodynamic point of view whereas the kinetic point of view has been much less addressed. The present study describes kinetic-based structure-activity relationship for quercetin. This compound is very characteristic of the wide flavonoid subclass of polyphenols. H-atom transfer is a mechanism based on either atom or electron transfer. This is analyzed here by quantum chemical calculations, which support the knowledge acquired from experimental studies. The competition between the different processes is discussed in terms of the nature of the prereaction complexes, the pH, the formation of activated-deprotonated forms, and the atom- and electron-transfer efficiency. The role of the catechol moiety and the 3-OH group of quercetin as scavengers of different types of free radicals (CH3OO(•), CH3O(•), (•)OH, and (•)CH2OH) is rationalized. Identifying the exact mechanism and accurately evaluating kinetics is of fundamental importance to understand antioxidant behavior in physiological environments.
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Affiliation(s)
- Florent Di Meo
- Laboratoire de Chimie des Substances Naturelles EA-1069, Faculté de Pharmacie, Université de Limoges, 2 rue du Docteur Marcland, Limoges Cedex, France
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Gao LG, Wang H, Song XL, Cao W. Research on the chelation between luteolin and Cr(III) ion through infrared spectroscopy, UV–vis spectrum and theoretical calculations. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.10.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Why is quercetin a better antioxidant than taxifolin? Theoretical study of mechanisms involving activated forms. J Mol Model 2013; 19:2165-72. [PMID: 23283546 DOI: 10.1007/s00894-012-1732-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 12/12/2012] [Indexed: 10/27/2022]
Abstract
The stronger antioxidant capacity of the flavonoid quercetin (Q) compared with taxifolin (dihydroquercetin, T) has been the subject of previous experimental and theoretical studies. Theoretical work has focused on the analysis of hydrogen bond dissociation energies (BDE) of the OH phenolic groups, but consider mechanisms that only involve the transfer of one hydrogen atom. In the present work we consider other mechanisms involving a second hydrogen transfer in reactions with free radicals. The relative stability of the radicals formed after the first hydrogen transfer reaction is considered in discussing the antioxidant activity of Q and T. In terms of global and local theoretical reactivity descriptors, we propose that the radical arising from Q should be more persistent in the environment and with the capability to react with a second radical by hydrogen transfer, proton transfer and electron transfer mechanisms. These mechanisms could be responsible of the stronger antioxidant capacity of Q.
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Kalisz S, Oszmiański J, Hładyszowski J, Mitek M. Stabilization of anthocyanin and skullcap flavone complexes--investigations with computer simulation and experimental methods. Food Chem 2012; 138:491-500. [PMID: 23265516 DOI: 10.1016/j.foodchem.2012.10.146] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Revised: 10/27/2012] [Accepted: 10/29/2012] [Indexed: 11/16/2022]
Abstract
We examined the stabilization of anthocyanins with flavones from the practical and theoretical perspective. The influence of addition of skullcap flavones, heating to 50 °C, and 12 day storage time (in the presence and absence of light) on the stability of anthocyanins in honeysuckle concentrates was investigated experimentally. Theoretical study was conducted with molecular dynamics methods in a model system, preceded by simulated annealing and thermalization. By the methods of the computer simulation of the copigmentation process we determined the sites responsible for the stabilization of a cyanidin quinoidal base-baicalin complex. We revealed both direct and water-mediated hydrogen bondings that keep the lamellar stacking structure of these molecules in the bounded form in water medium. The stacking occurs also due to hydrophobic interactions of the rings of both molecules. The experimental part of the study confirmed the effectiveness of anthocyanins stabilization in a concentrate of honeysuckle with the use of skullcap flavones.
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Affiliation(s)
- Stanisław Kalisz
- Division of Fruits and Vegetables Technology, Faculty of Food Sciences, Department of Food Technology, Warsaw University of Life Sciences (SGGW), Nowoursynowska 166, 02-787 Warsaw, Poland.
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Li J, Jin R. DFT study on the radical scavenging activity of β,β-dimethylacrylalkannin derivatives. MOLECULAR SIMULATION 2012. [DOI: 10.1080/08927022.2012.680887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kabanda MM. Antioxidant Activity of Rooperol Investigated through Cu (I and II) Chelation Ability and the Hydrogen Transfer Mechanism: A DFT Study. Chem Res Toxicol 2012; 25:2153-66. [DOI: 10.1021/tx300244z] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Mwadham M. Kabanda
- Department of Chemistry, North-West University (Mafikeng Campus), Private Bag x 2046, Mmabatho 2735,
South Africa
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50
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Chakraborty S, Biswas PK. Elucidation of the Mechanistic Pathways of the Hydroxyl Radical Scavenging Reaction by Daidzein Using Hybrid QM/MM Dynamics. J Phys Chem A 2012; 116:8775-85. [DOI: 10.1021/jp303543z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sandipan Chakraborty
- Laboratory of Computational Biophysics & Bioengineering Department of Physics, Tougaloo College, Tougaloo Mississippi 39174, United States
| | - P. K. Biswas
- Laboratory of Computational Biophysics & Bioengineering Department of Physics, Tougaloo College, Tougaloo Mississippi 39174, United States
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