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Kamaraj M, Suresh Babu P, Shyamalagowri S, Pavithra MKS, Aravind J, Kim W, Govarthanan M. β-cyclodextrin polymer composites for the removal of pharmaceutical substances, endocrine disruptor chemicals, and dyes from aqueous solution- A review of recent trends. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119830. [PMID: 38141340 DOI: 10.1016/j.jenvman.2023.119830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 11/25/2023] [Accepted: 11/30/2023] [Indexed: 12/25/2023]
Abstract
Cyclodextrin (CD) and its derivatives are receiving attention as a new-generation adsorbent for water pollution treatment due to their external hydrophilic and internal hydrophobic properties. Among types of CD, β-Cyclodextrin (βCD) has been a material of choice with a proven track record for a range of utilities in distinct domains, owing to its unique cage-like structural conformations and inclusion complex-forming ability, especially to mitigate emerging contaminants (ECs). This article outlines βCD composites in developing approaches of their melds and composites for purposes such as membranes for removal of the ECs in aqueous setups have been explored with emphasis on recent trends. Electrospinning has bestowed an entirely different viewpoint on polymeric materials, comprising βCD, in the framework of diverse functions across a multitude of niches. Besides, this article especially discusses βCD polymer composite membrane-based removal of contaminants such as pharmaceutical substances, endocrine disruptors chemicals, and dyes. Finally, in this article, the challenges and future directions of βCD-based adsorbents are discussed, which may shed light on pragmatic commercial applications of βCD polymer composite membranes.
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Affiliation(s)
- M Kamaraj
- Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology-Ramapuram, Chennai, 600089, Tamil Nadu, India; Life Science Division, Faculty of Health and Life Sciences, INTI International University, Nilai, 71800, Malaysia
| | - P Suresh Babu
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, 602105, Tamil Nadu, India.
| | - S Shyamalagowri
- PG and Research Department of Botany, Pachaiyappa's College, Chennai, 600030, Tamil Nadu, India
| | - M K S Pavithra
- Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, 638401, Tamil Nadu, India
| | - J Aravind
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, 602105, Tamil Nadu, India
| | - Woong Kim
- Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - M Govarthanan
- Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea; Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600 077, India.
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Current Status of Quantum Chemical Studies of Cyclodextrin Host-Guest Complexes. Molecules 2022; 27:molecules27123874. [PMID: 35744998 PMCID: PMC9229288 DOI: 10.3390/molecules27123874] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/09/2022] [Accepted: 06/13/2022] [Indexed: 12/30/2022] Open
Abstract
This article aims to review the application of various quantum chemical methods (semi-empirical, density functional theory (DFT), second order Møller-Plesset perturbation theory (MP2)) in the studies of cyclodextrin host-guest complexes. The details of applied approaches such as functionals, basis sets, dispersion corrections or solvent treatment methods are analyzed, pointing to the best possible options for such theoretical studies. Apart from reviewing the ways that the computations are usually performed, the reasons for such studies are presented and discussed. The successful applications of theoretical calculations are not limited to the determination of stable conformations but also include the prediction of thermodynamic properties as well as UV-Vis, IR, and NMR spectra. It has been shown that quantum chemical calculations, when applied to the studies of CD complexes, can provide results unobtainable by any other methods, both experimental and computational.
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Wang L, Li S, Cai H, Liu X, Feng T, Zhao X. Preparation and characterisation of ecdysterone/hydroxypropyl-Β-cyclodextrin inclusion complex with enhanced oral and transdermal bioavailability. J Microencapsul 2022; 39:145-155. [PMID: 35311602 DOI: 10.1080/02652048.2022.2056251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
To prepare ecdysterone (ES)/hydroxypropyl-β-cyclodextrin (HP-β-CD) inclusion complex, thus improving the water solubility and bioavailability of ES. Phase-solubility study was performed to study the mass ratio of ES and HP-β-CD. Then, the ES/HP-β-CD inclusion complex was prepared by the solvent evaporation method, and its physicochemical properties were characterised using the SEM, DSC, XRD, 1HNMR and FT-IR. In addition, in vitro dissolution and bioavailability (oral and transdermal) experiments were also conducted. The inclusion complex was formed with ES and HP-β-CD at the mass ratio of 1:1. ES existed in an amorphous form in the inclusion complex. The equilibrium solubility of ES/HP-β-CD inclusion complex in SGF (simulated gastric fluid) and SIF (simulated intestinal fluid) was 50.6 ± 0.11 mg/mL and 75.9 ± 0.38 mg/mL in SGF and SIF, which was 5.93 and 9.96 times higher than that of free ES, respectively. The ES/HP-β-CD inclusion complex had better dissolution ability and transdermal permeability than the free ES. The oral bioavailability and the transdermal bioavailability were respectively increased by 2.97 times and 1.92 times compared with the free ES. These data suggest that the ES/HP-β-CD inclusion complex can be developed as potential pharmaceutical product for future clinical applications.
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Affiliation(s)
- Li Wang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Ministry of Education, Northeast Forestry University, Harbin, China.,Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, China
| | - Shen Li
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Ministry of Education, Northeast Forestry University, Harbin, China.,Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, China
| | - Hongda Cai
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Ministry of Education, Northeast Forestry University, Harbin, China.,Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, China
| | - Xiaohu Liu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Ministry of Education, Northeast Forestry University, Harbin, China.,Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, China
| | - Tongtong Feng
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Ministry of Education, Northeast Forestry University, Harbin, China.,Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, China
| | - Xiuhua Zhao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Ministry of Education, Northeast Forestry University, Harbin, China.,Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, China
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Shi YG, Li DH, Kong YM, Zhang RR, Gu Q, Hu MX, Tian SY, Jin WG. Enhanced antibacterial efficacy and mechanism of octyl gallate/beta-cyclodextrins against Pseudomonas fluorescens and Vibrio parahaemolyticus and incorporated electrospun nanofibers for Chinese giant salamander fillets preservation. Int J Food Microbiol 2022; 361:109460. [PMID: 34785387 DOI: 10.1016/j.ijfoodmicro.2021.109460] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/24/2021] [Accepted: 10/25/2021] [Indexed: 10/20/2022]
Abstract
A series of alkyl gallates were evaluated for the antibacterial activity against two common Gram-negative foodborne bacteria (Pseudomonas fluorescens and Vibrio parahaemolyticus) associated with seafood. The length of the alkyl chain plays a pivotal role in eliciting their antibacterial activities and octyl gallate (OG) exerted an excellent inhibitory efficacy. To extend the aqueous solubility, stability, and bactericidal properties of octyl gallate (OG), an inclusion complex between OG and β-cyclodextrin (βCD), OG/βCD, was prepared and identified with various methods including X-ray diffraction (XRD), differential scanning calorimeter (DSC) and Fourier transform infrared spectroscopy (FTIR). Furthermore, the enhanced inhibitory effect and potential antibacterial mechanism of OG/βCD against two Gram-negative and Gram-positive foodborne bacteria were comprehensively investigated. The results show that OG/βCD could function against bacteria through effectively damaging the membrane, permeating into cells, and then disturbing the activity of the respiratory electron transport chain to cause the production of high-level intracellular hydroxyl radicals. Moreover, the reinforced OG/βCD-incorporated polylactic acid (PLA) nanofibers were fabricated using the electrospinning technique as food packaging to extend the Chinese giant salamander fillet's shelf life at 4 °C. This research highlights the antibacterial effectiveness of OG/βCD in aqueous media, which can be used as a safe multi-functionalized food additive combined with the benefits of electrospun nanofibers to extend the Chinese giant salamander fillets shelf life by 15 d at 4 °C.
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Affiliation(s)
- Yu-Gang Shi
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China; Key Laboratory for Food Microbial Technology of Zhejiang Province, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China.
| | - Dong-Hui Li
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China
| | - Yi-Ming Kong
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China
| | - Run-Run Zhang
- Department of Food Science and Nutrition, National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China
| | - Qing Gu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China; Key Laboratory for Food Microbial Technology of Zhejiang Province, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China.
| | - Meng-Xin Hu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China
| | - Shi-Yi Tian
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310035, China
| | - Wen-Gang Jin
- Bio-resources Key Laboratory of Shaanxi Province, School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, China
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Development of CE-C 4D Method for Determination Tropane Alkaloids. Molecules 2021; 26:molecules26195749. [PMID: 34641293 PMCID: PMC8510007 DOI: 10.3390/molecules26195749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/15/2021] [Accepted: 09/20/2021] [Indexed: 11/22/2022] Open
Abstract
A fast method for the determination of tropane alkaloids, using a portable CE instrument with a capacitively coupled contactless conductivity detector (CE-C4D) was developed and validated for determination of atropine and scopolamine in seeds from Solanaceae family plants. Separation was obtained within 5 min, using an optimized background electrolyte consisting of 0.5 M acetic acid with 0.25% (w/v) β-CD. The limit of detection and quantification was 0.5 µg/mL and 1.5 µg/mL, respectively, for both atropine and scopolamine. The developed method was validated with the following parameters—precision (CV): 1.07–2.08%, accuracy of the assay (recovery, RE): 101.0–102.7% and matrix effect (ME): 92.99–94.23%. Moreover, the optimized CE-C4D method was applied to the analysis of plant extracts and pharmaceuticals, proving its applicability and accuracy.
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Butnariu M, Peana M, Sarac I, Chirumbolo S, Tzoupis H, Chasapis CT, Bjørklund G. Analytical and in silico study of the inclusion complexes between tropane alkaloids atropine and scopolamine with cyclodextrins. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01742-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AbstractDatura stramonium L. (Solanaceae) possesses a rich tropane alkaloids (TAs) spectrum. The plant contains, in particular, the allelopathic compounds scopolamine and atropine, which are poorly soluble in water, thus limiting their use in agrochemical formulations as biocidal and deterrent agents against herbivore insects. The efficacy of the hydrophobic TAs extracts could be increased with the improvement of their dissolution/leaching properties. This is important for improving screening and test performance and for elucidating the activity of environmentally friendly agricultural approaches, with new perspectives for the production and use of those biodegradable insecticidal products. The present study explores the aspects of atropine and scopolamine complexation with cyclodextrin (CDs) through FT-IR and UV–Vis spectroscopies. In addition, the structures of the inclusion complex of atropine, scopolamine and β-CD have been investigated by molecular modeling techniques. The results obtained indicate that β-CDs are a promising carriers for improving the properties of TAs, therefore increasing their application potential in agrochemical formulations.
Graphic abstract
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Bakirova R, Nukhuly A, Iskineyeva A, Fazylov S, Burkeyev M, Mustafayeva A, Minayeva Y, Sarsenbekova A. Obtaining and Investigation of the β-Cyclodextrin Inclusion Complex with Vitamin D 3 Oil Solution. SCIENTIFICA 2020; 2020:6148939. [PMID: 32908782 PMCID: PMC7450341 DOI: 10.1155/2020/6148939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/14/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
Background. The research results of fat-soluble vitamin D 3 (cholecalciferol) encapsulation with β-cyclodextrin have been presented in this work. The vitamin D 3 inclusion complex with β-cyclodextrin was obtained under microwave radiation. The surface morphology of obtained clathrate inclusion complexes was described with the help of a scanning electron microscope. The thermographic measurement results on a differential scanning calorimeter have been presented. The activation energy of the β-cyclodextrin : vitamin D 3 clathrate complex thermal oxidative destruction reaction was calculated. The clathrate thermal destruction kinetic parameters were determined. The inclusion complex spectral properties were characterized by IR-Fourier and 1H and 13C NMR spectroscopy. The existence of β-cyclodextrin inclusion complex with vitamin D 3 in a 2 : 1 ratio was confirmed by the experimental results. The activation energy of thermal destruction of the inclusion complex of β-cyclodextrin with vitamin D 3 was calculated using four different methods.
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Affiliation(s)
- Ryszhan Bakirova
- Karaganda Medical University, Non-Commercial Joint-Stock Company, Karaganda, Kazakhstan
| | | | - Ainara Iskineyeva
- Saken Seifullin Kazakh Agrotechnical University, Nur-Sultan, Kazakhstan
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Designing and preparing supramolecular fluorescent probe based on carminic acid and γ-cyclodextrins and studying their application for detection of 2-aminobenzidazole. Carbohydr Polym 2020; 241:116367. [PMID: 32507167 DOI: 10.1016/j.carbpol.2020.116367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 04/22/2020] [Accepted: 04/22/2020] [Indexed: 01/30/2023]
Abstract
Supramolecular fluorescent probe, which was designed and modeled from carminic acid (CA) and γ-cyclodextrins (γ-CDs), was initially qualified and stated comprehensively. Fluorescence intensity of CA could be dramatically enhanced ∼850 a.u. through formation of a supramolecular fluorescent probe CA@γ-CDs. The super-probe was verified by geometric conformation and molecular docking, and subsequently characterized by FT-IR, NMR, XRD and fluorescence lifetime. Furthermore, the CA@γ-CDs probe was proved on the detection of fungicide 2-aminobenzidazole (2-BZ). Finally, fluorescence performance of CA and the application of the probe for molecular recognition were both motivated by γ-CDs significantly, which could facilitate the fluorescence detection of CA more extensively and precisely.
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Li Y, Zhang Y, Lan J, Yan B, Qiu J, Meng Q, Peng Y, Shi L, Ran R. Ion-conducting gel with light-controlled variable conductivity: From cyclodextrin to messenger of light. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Detsi A, Kavetsou E, Kostopoulou I, Pitterou I, Pontillo ARN, Tzani A, Christodoulou P, Siliachli A, Zoumpoulakis P. Nanosystems for the Encapsulation of Natural Products: The Case of Chitosan Biopolymer as a Matrix. Pharmaceutics 2020; 12:E669. [PMID: 32708823 PMCID: PMC7407519 DOI: 10.3390/pharmaceutics12070669] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 12/12/2022] Open
Abstract
Chitosan is a cationic natural polysaccharide, which has emerged as an increasingly interesting biomaterialover the past few years. It constitutes a novel perspective in drug delivery systems and nanocarriers' formulations due to its beneficial properties, including biocompatibility, biodegradability and low toxicity. The potentiality of chemical or enzymatic modifications of the biopolymer, as well as its complementary use with other polymers, further attract the scientific community, offering improved and combined properties in the final materials. As a result, chitosan has been extensively used as a matrix for the encapsulation of several valuable compounds. In this review article, the advantageous character of chitosan as a matrix for nanosystemsis presented, focusing on the encapsulation of natural products. A five-year literature review is attempted covering the use of chitosan and modified chitosan as matrices and coatings for the encapsulation of natural extracts, essential oils or pure naturally occurring bioactive compounds are discussed.
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Affiliation(s)
- Anastasia Detsi
- Department of Chemical Sciences, Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, 15780 Athens, Greece; (E.K.); (I.K.); (I.P.); (A.R.N.P.); (A.T.)
| | - Eleni Kavetsou
- Department of Chemical Sciences, Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, 15780 Athens, Greece; (E.K.); (I.K.); (I.P.); (A.R.N.P.); (A.T.)
| | - Ioanna Kostopoulou
- Department of Chemical Sciences, Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, 15780 Athens, Greece; (E.K.); (I.K.); (I.P.); (A.R.N.P.); (A.T.)
| | - Ioanna Pitterou
- Department of Chemical Sciences, Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, 15780 Athens, Greece; (E.K.); (I.K.); (I.P.); (A.R.N.P.); (A.T.)
| | - Antonella Rozaria Nefeli Pontillo
- Department of Chemical Sciences, Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, 15780 Athens, Greece; (E.K.); (I.K.); (I.P.); (A.R.N.P.); (A.T.)
| | - Andromachi Tzani
- Department of Chemical Sciences, Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Zografou Campus, 15780 Athens, Greece; (E.K.); (I.K.); (I.P.); (A.R.N.P.); (A.T.)
| | - Paris Christodoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vassileos Constantinou Ave. 48, 116 35 Athens, Greece; (P.C.); (A.S.)
| | - Aristeia Siliachli
- Institute of Chemical Biology, National Hellenic Research Foundation, Vassileos Constantinou Ave. 48, 116 35 Athens, Greece; (P.C.); (A.S.)
- Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 41500 Larissa, Greece
| | - Panagiotis Zoumpoulakis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vassileos Constantinou Ave. 48, 116 35 Athens, Greece; (P.C.); (A.S.)
- Department of Food Science and Technology, Universisty of West Attica, Ag. Spyridonos Str., Egaleo, 12243 Athens, Greece
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Antibacterial activity and action mechanism of microencapsulated dodecyl gallate with methyl-β-cyclodextrin. Food Control 2020. [DOI: 10.1016/j.foodcont.2019.106953] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Formulation and evaluation of cyclodextrin complexes for improved anticancer activity of repurposed drug: Niclosamide. Carbohydr Polym 2019; 212:252-259. [DOI: 10.1016/j.carbpol.2019.02.041] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 01/28/2019] [Accepted: 02/12/2019] [Indexed: 12/14/2022]
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Ma Y, Fan B, Zhou T, Hao H, Yang B, Sun H. Molecular Assembly between Weak Crosslinking Cyclodextrin Polymer and trans-Cinnamaldehyde for Corrosion Inhibition towards Mild Steel in 3.5% NaCl Solution: Experimental and Theoretical Studies. Polymers (Basel) 2019; 11:E635. [PMID: 30960614 PMCID: PMC6523557 DOI: 10.3390/polym11040635] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 04/03/2019] [Indexed: 11/17/2022] Open
Abstract
Constructing molecular assembly between a soluble cyclodextrin polymer (SCDP) and an anticorrosive component is conducive to increasing the availability of a corrosion inhibitor with low molecular polarity in aqueous solution. The SCDP was prepared via the weak crosslinking effect of glutaraldehyde using β-cyclodextrin as the subunit, whose structure was confirmed by proton nuclear magnetic resonance spectra (¹H NMR), X-ray diffraction and morphology. An assembly between SCDP (host) and trans-cinnamaldehyde (guest, CA) was constructed, and the intermolecular interactions were disclosed by Fourier transform infrared spectra (FTIR). The corrosion inhibition of SCDP/CA assembly for mild steel in 3.5% NaCl solution was assessed through electrochemical and surface analyses. ¹H NMR results showed that exterior hydroxyls of β-cyclodextrin were the active sites for crosslinking. Hydrogen bonds might be the binding force between SCDP and CA according to FTIR analyses. Electrochemical measurements revealed that SCDP/CA assembly could suppress both cathodic and anodic reactions and enhance the polarization impedance for mild steel in the corrosive medium with a maximum efficiency of 92.2% at 30 °C. Surface analyses showed that CA molecules could be released from the assembly followed by the energy competition mechanism, and solely adsorb on the steel surface in parallel form, which was further evidenced by theoretical modeling.
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Affiliation(s)
- Yucong Ma
- School of Materials and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China.
| | - Baomin Fan
- School of Materials and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China.
| | - Tingting Zhou
- School of Materials and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China.
| | - Hua Hao
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Biao Yang
- School of Materials and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China.
| | - Hui Sun
- School of Materials and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China.
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