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Abstract
Flavonoids represent a large group of aromatic amino acids that are extensively disseminated in plants. More than six thousand different flavonoids have been isolated and identified. They are important components of the human diet, presenting a broad spectrum of health benefits, including antibacterial, antiviral, antimicrobial, antineoplastic, anti-mutagenic, anti-inflammatory, anti-allergic, immunomodulatory, vasodilatory and cardioprotective properties. They are now considered indispensable compounds in the healthcare, food, pharmaceutical, cosmetic and biotechnology industries. All flavonoids are electroactive, and a relationship between their electron-transfer properties and radical-scavenging activity has been highlighted. This review seeks to provide a comprehensive overview concerning the electron-transfer reactions in flavonoids, from the point of view of their in-vitro antioxidant mode of action. Flavonoid redox behavior is related to the oxidation of the phenolic hydroxy groups present in their structures. The fundamental principles concerning the redox behavior of flavonoids will be described, and the phenol moiety oxidation pathways and the effect of substituents and experimental conditions on flavonoid electrochemical behavior will be discussed. The final sections will focus on the electroanalysis of flavonoids in natural products and their identification in highly complex matrixes, such as fruits, vegetables, beverages, food supplements, pharmaceutical compounds and human body fluids, relevant for food quality control, nutrition, and healthcare research.
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Affiliation(s)
- Ana-Maria Chiorcea-Paquim
- Instituto Pedro Nunes (IPN), 3030-199 Coimbra, Portugal;
- University of Coimbra, Centre for Mechanical Engineering, Materials and Processes (CEMMPRE), Advanced Production and Intelligent Systems (ARISE), Department of Chemistry, 3004-535 Coimbra, Portugal
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2
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Ma L, Worland R, Tran T, Anastasio C. Evaluation of Probes to Measure Oxidizing Organic Triplet Excited States in Aerosol Liquid Water. Environ Sci Technol 2023; 57:6052-6062. [PMID: 37011016 DOI: 10.1021/acs.est.2c09672] [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] [Indexed: 06/19/2023]
Abstract
Oxidizing triplet excited states of organic matter (3C*) drive numerous reactions in fog/cloud drops and aerosol liquid water (ALW). Quantifying oxidizing triplet concentrations in ALW is difficult because 3C* probe loss can be inhibited by the high levels of dissolved organic matter (DOM) and copper in particle water, leading to an underestimate of triplet concentrations. In addition, illuminated ALW contains high concentrations of singlet molecular oxygen (1O2*), which can interfere with 3C* probes. Our overarching goal is to find a triplet probe that has low inhibition by DOM and Cu(II) and low sensitivity to 1O2*. To this end, we tested 12 potential probes from a variety of compound classes. Some probes are strongly inhibited by DOM, while others react rapidly with 1O2*. One of the probe candidates, (phenylthiol)acetic acid (PTA), seems well suited for ALW conditions, with mild inhibition and fast rate constants with triplets, but it also has weaknesses, including a pH-dependent reactivity. We evaluated the performance of both PTA and syringol (SYR) as triplet probes in aqueous extracts of particulate matter. While PTA is less sensitive to inhibition than SYR, it results in lower triplet concentrations, possibly because it is less reactive with weakly oxidizing triplets.
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Affiliation(s)
- Lan Ma
- Department of Land, Air, and Water Resources, University of California, Davis, California 95616, United States
| | - Reed Worland
- Department of Land, Air, and Water Resources, University of California, Davis, California 95616, United States
| | - Theo Tran
- Department of Land, Air, and Water Resources, University of California, Davis, California 95616, United States
| | - Cort Anastasio
- Department of Land, Air, and Water Resources, University of California, Davis, California 95616, United States
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3
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Mendoza-Wilson AM, Balandrán-Quintana RR, Valdés-Covarrubias MÁ, Cabellos JL. Potential of quercetin in combination with antioxidants of different polarity incorporated in oil-in-water nanoemulsions to control enzymatic browning of apples. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132372] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Huang J, Chen C, Zhao Z, Li X, Wang X, Jin Q, Tang J. Inhibition effect of oryzanol on the degradation of tocopherol and the oxidation kinetic of rice bran oils with different content of oryzanol and tocopherol. EUR J LIPID SCI TECH 2022. [DOI: 10.1002/ejlt.202100155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jianhua Huang
- National Engineering Research Centre for Functional Food, Collaborative Innovation Centre of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Chuying Chen
- National Engineering Research Centre for Functional Food, Collaborative Innovation Centre of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Zhengmei Zhao
- National Engineering Research Centre for Functional Food, Collaborative Innovation Centre of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Xu Li
- National Engineering Research Centre for Functional Food, Collaborative Innovation Centre of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Xingguo Wang
- National Engineering Research Centre for Functional Food, Collaborative Innovation Centre of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Qingzhe Jin
- National Engineering Research Centre for Functional Food, Collaborative Innovation Centre of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Junjun Tang
- Jiangsu Xingfumen Grain and Oil Co. LTD Taizhou 225300 China
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Joyner PM. Protein Adducts and Protein Oxidation as Molecular Mechanisms of Flavonoid Bioactivity. Molecules 2021; 26:molecules26165102. [PMID: 34443698 PMCID: PMC8401221 DOI: 10.3390/molecules26165102] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 07/21/2021] [Revised: 08/16/2021] [Accepted: 08/20/2021] [Indexed: 02/05/2023] Open
Abstract
There are tens of thousands of scientific papers about flavonoids and their impacts on human health. However, despite the vast amount of energy that has been put toward studying these compounds, a unified molecular mechanism that explains their bioactivity remains elusive. One contributing factor to the absence of a general mechanistic explanation of their bioactivity is the complexity of flavonoid chemistry in aqueous solutions at neutral pH. Flavonoids have acidic protons, are redox active, and frequently auto-oxidize to produce an array of degradation products including electrophilic quinones. Flavonoids are also known to interact with specificity and high affinity with a variety of proteins, and there is evidence that some of these interactions may be covalent. This review summarizes the mechanisms of flavonoid oxidation in aqueous solutions at neutral pH and proposes the formation of protein-flavonoid adducts or flavonoid-induced protein oxidation as putative mechanisms of flavonoid bioactivity in cells. Nucleophilic residues in proteins may be able to form covalent bonds with flavonoid quinones; alternatively, specific amino acid residues such as cysteine, methionine, or tyrosine in proteins could be oxidized by flavonoids. In either case, these protein-flavonoid interactions would likely occur at specific binding sites and the formation of these types of products could effectively explain how flavonoids modify proteins in cells to induce downstream biochemical and cellular changes.
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Affiliation(s)
- P Matthew Joyner
- Natural Science Division, Pepperdine University, 24255 Pacific Coast Highway, Malibu, CA 90263, USA
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Liu R, Xu Y, Chang M, Liu R, Wang X. Interactions between α-tocopherol and γ-oryzanol in oil-in-water emulsions. Food Chem 2021; 356:129648. [PMID: 33819788 DOI: 10.1016/j.foodchem.2021.129648] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 02/28/2021] [Accepted: 03/11/2021] [Indexed: 12/31/2022]
Abstract
The interaction between antioxidants is affected by many factors, such as concentration, ratio and system. In this study, different concentrations of α-tocopherol and γ-oryzanol showed antagonistic effect in the oil-in-water emulsion, and the distribution of α-tocopherol increased in aqueous phase after combined with γ-oryzanol. The concentration could affect the degree of antagonism. According to fluorescence quenching, cyclic voltammetry measurements and the oxidative decomposition of antioxidants during storage, the inhibitory effect of γ-oryzanol on the regeneration of α-tocopherol was proposed to be responsible for the antagonism. This work can provide suggestions for studying the mechanism of antioxidant interaction in emulsion system.
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Affiliation(s)
- Ruru Liu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Ying Xu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Ming Chang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Ruijie Liu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China.
| | - Xingguo Wang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China
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7
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Abstract
This review aimed to give comprehensive information about the interactions between free and bound antioxidants naturally found in different food matrices. In this context, firstly, the free and bound antioxidant terms are defined; their place in the daily diet, the path they follow in the body and their characteristics are explained. Factors affecting the interactions have been revealed as a result of the compilation of studies conducted until today, related to bound and free antioxidant interactions. Accordingly, it was observed that many factors such as reaction environment, concentration, pH, chemical structure, source and antioxidant/prooxidant nature of the compounds were effective on interactions. It has been emphasized that the interactions between free and bound antioxidants have a dynamic balance that can easily change under the influence of various factors, which in turn needs the interactions to be handled specifically for each case.
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Affiliation(s)
- Ecem Evrim Çelik
- Food Quality and Safety (FoQuS) Research Group, Food Engineering Department, Hacettepe University, Ankara, Turkey
| | - Vural Gökmen
- Food Quality and Safety (FoQuS) Research Group, Food Engineering Department, Hacettepe University, Ankara, Turkey
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Nhu Hieu VM, Thanh Van TT, Hang CTT, Mischenko NP, Sergey A. F, Truong HB. Polyhydroxynaphthoquinone Pigment From Vietnam Sea Urchins as a Potential Bioactive Ingredient in Cosmeceuticals. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20972525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In this study, valuable polyhydroxynaphthoquinone (PHNQ) pigments were recovered from sea urchin food waste and were investigated as a potential bioactive ingredient for cosmeceuticals. The crude PHNQ pigment extract from 4 Vietnam sea urchins, Diadema setosum, Diadema savignyi, Stomopneustes variolaris, and Tripneustes gratilla, exhibited effective 2,2-diphenyl-1-picryl-hydrazyl-hydrate scavenging activity, tyrosinase inhibitory activity, and antibacterial activity. The moisturizing cream with 0.5% of PHNQ pigments from D. setosum and Tripneustes gratilla sea urchins showed no dermal irritation over 14 days of mouse skin test. Four major active components in PHNQ were identified via high-performance liquid chromatography coupled with diode array detector and mass spectrometry. Echinochrome A contributed considerably to the antioxidant activity of the extracts while those containing echinochrome A and spinochrome E were significantly active against various bacteria. The promising results laid the foundation for establishing a novel process from food waste to innovative biomaterial and formulating eco-friendly skincare products with PHNQ components from sea urchins as precious ingredient.
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Affiliation(s)
- Vo Mai Nhu Hieu
- Nhatrang Institute of Technology Research and Application, VAST, Khanh Hoa, Vietnam
| | - Tran Thi Thanh Van
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Cao Thi Thuy Hang
- Department of Environment and Energy, Sejong University, Seoul, South Korea
| | - Natalia P. Mischenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Fedoreyev Sergey A.
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Hai Bang Truong
- Nhatrang Institute of Technology Research and Application, VAST, Khanh Hoa, Vietnam
- Department of Environment and Energy, Sejong University, Seoul, South Korea
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Bello OM, Jagaba SM, Ogbesejana AB, Dada OA, Bello OE, Kabo KS, Okunola JO. Antidiabetics, antioxidant, enzyme inhibitory activity and polyphenolic profile of polyphenol rich extracts from three underutilized and indigenous vegetables (UIVs) from Nigeria. Scientific African 2020. [DOI: 10.1016/j.sciaf.2020.e00628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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10
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Liu R, Xu Y, Chang M, Tang L, Lu M, Liu R, Jin Q, Wang X. Antioxidant interaction of α-tocopherol, γ-oryzanol and phytosterol in rice bran oil. Food Chem 2020; 343:128431. [PMID: 33131960 DOI: 10.1016/j.foodchem.2020.128431] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/22/2020] [Accepted: 10/16/2020] [Indexed: 12/29/2022]
Abstract
In this study, purified rice bran oil (RBO) was used as a lipid matrix model to study the individual and binary antioxidant capacity of the minor constituents (α-tocopherol, γ-oryzanol and phytosterol) added at different concentrations and ratios. The results revealed that concentration influenced on the oxidation stability and scavenging capacity, while ratio mainly affected the type of interaction or the degree of synergism or antagonism. It was important to notice that the antioxidant capacity of α-tocopherol would decrease under high concentration. Besides, the inhibition of phytosterol on α-tocopherol and the formation of hydrogen bond between γ-oryzanol and phytosterol were speculated by the interactions of these minor constituents. This work helps to select efficient combinations for stabilizing the anti-oxidation of nutrient enriched RBO or provide suggestions for moderate retain of minor constituents in RBO.
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Affiliation(s)
- Ruru Liu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu PR China
| | - Ying Xu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu PR China
| | - Ming Chang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu PR China
| | - Lin Tang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu PR China
| | - Mengyao Lu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu PR China
| | - Ruijie Liu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu PR China.
| | - Qingzhe Jin
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu PR China
| | - Xingguo Wang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu PR China
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Chiorcea-Paquim AM, Enache TA, De Souza Gil E, Oliveira-Brett AM. Natural phenolic antioxidants electrochemistry: Towards a new food science methodology. Compr Rev Food Sci Food Saf 2020; 19:1680-1726. [PMID: 33337087 DOI: 10.1111/1541-4337.12566] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 03/26/2020] [Accepted: 03/31/2020] [Indexed: 11/27/2022]
Abstract
Natural phenolic compounds are abundant in the vegetable kingdom, occurring mainly as secondary metabolites in a wide variety of chemical structures. Around 10,000 different plant phenolic derivatives have been isolated and identified. This review provides an exhaustive overview concerning the electron transfer reactions in natural polyphenols, from the point of view of their in vitro antioxidant and/or pro-oxidant mode of action, as well as their identification in highly complex matrixes, for example, fruits, vegetables, wine, food supplements, relevant for food quality control, nutrition, and health research. The accurate assessment of polyphenols' redox behavior is essential, and the application of the electrochemical methods in routine quality control of natural products and foods, where the polyphenols antioxidant activity needs to be quantified in vitro, is of the utmost importance. The phenol moiety oxidation pathways and the effect of substituents and experimental conditions on their electrochemical behavior will be reviewed. The fundamental principles concerning the redox behavior of natural polyphenols, specifically flavonoids and other benzopyran derivatives, phenolic acids and ester derivatives, quinones, lignins, tannins, lignans, essential oils, stilbenes, curcuminoids, and chalcones, will be described. The final sections will focus on the electroanalysis of phenolic antioxidants in natural products and the electroanalytical evaluation of in vitro total antioxidant capacity.
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Affiliation(s)
| | - Teodor Adrian Enache
- CEMMPRE, Department of Chemistry, University of Coimbra, Coimbra, 3004-535, Portugal
| | - Eric De Souza Gil
- CEMMPRE, Department of Chemistry, University of Coimbra, Coimbra, 3004-535, Portugal.,Faculdade de Farmácia, Universidade Federal de Goiás, Setor Universitário, Goiânia, Goiás, Brasil
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Tavadyan LA, Minasyan SH. Synergistic and antagonistic co-antioxidant effects of flavonoids with trolox or ascorbic acid in a binary mixture. J CHEM SCI 2019; 131. [DOI: 10.1007/s12039-019-1618-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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13
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Enrico C. Nanotechnology-Based Drug Delivery of Natural Compounds and Phytochemicals for the Treatment of Cancer and Other Diseases. Studies in Natural Products Chemistry 2019. [DOI: 10.1016/b978-0-444-64185-4.00003-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Atere T, Akinloye O, Ugbaja R, Ojo D, Dealtry G. In vitro antioxidant capacity and free radical scavenging evaluation of standardized extract of Costus afer leaf. Food Science and Human Wellness 2018. [DOI: 10.1016/j.fshw.2018.09.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Vijayaraghavan K, Rajkumar J, Seyed MA. Phytochemical screening, free radical scavenging and antimicrobial potential of Chromolaena odorata leaf extracts against pathogenic bacterium in wound infections– a multispectrum perspective. Biocatalysis and Agricultural Biotechnology 2018. [DOI: 10.1016/j.bcab.2018.05.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Cömert ED, Gökmen V. Evolution of food antioxidants as a core topic of food science for a century. Food Res Int 2018; 105:76-93. [DOI: 10.1016/j.foodres.2017.10.056] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Revised: 10/18/2017] [Accepted: 10/28/2017] [Indexed: 01/16/2023]
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Cömert ED, Gökmen V. Antioxidants Bound to an Insoluble Food Matrix: Their Analysis, Regeneration Behavior, and Physiological Importance. Compr Rev Food Sci Food Saf 2017; 16:382-399. [DOI: 10.1111/1541-4337.12263] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 03/01/2017] [Accepted: 03/01/2017] [Indexed: 02/02/2023]
Affiliation(s)
- Ezgi Doğan Cömert
- Food Quality and Safety (FoQuS) Research Group, Dept. of Food Engineering; Hacettepe Univ.; 06800 Beytepe Ankara Turkey
| | - Vural Gökmen
- Food Quality and Safety (FoQuS) Research Group, Dept. of Food Engineering; Hacettepe Univ.; 06800 Beytepe Ankara Turkey
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18
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Affiliation(s)
- Kathleen Oehlke
- Food Technology Division, Institute of Human Nutrition and Food ScienceUniversity of Kiel KielGermany
| | - Britta Harbaum‐Piayda
- Food Technology Division, Institute of Human Nutrition and Food ScienceUniversity of Kiel KielGermany
| | | | | | - Karin Schwarz
- Food Technology Division, Institute of Human Nutrition and Food ScienceUniversity of Kiel KielGermany
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Siriwardhana N, Lee KW, Jeon YJ, Kim SH, Haw JW. Antioxidant Activity of Hizikia fusiformis on Reactive Oxygen Species Scavenging and Lipid Peroxidation Inhibition. FOOD SCI TECHNOL INT 2016. [DOI: 10.1177/1082013203039014] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Water and organic extracts (diethyl ether, chloroform, ethyl acetate, acetone, ethanol and methanol) obtained from Hizikia fusiformis were screened on reactive oxygen species (ROS) scavenging assays (1,1-diphenyl-2-picrylhydrazyl (DPPH), superoxide anion, hydrogen peroxide and hydroxyl radical) and lipid peroxidation (inhibition of linoleic acid oxidation) inhibitory assays. Water, methanol and ethanol extracts showed significant ROS radical scavenging activities. Water extracts showed high scavenging activities on hydrogen peroxide (around 76%) and DPPH radicals (around 75%) while it presented a moderate scavenging activity on hydroxyl radicals (around 54%). Comparatively higher ROS scavenging activities were recorded in hydroxyl radical and DPPH scavenging assays. DPPH radical scavenging activities were well correlated with the polyphenolic content. ROS scavenging and lipid peroxidation inhibition activities indicated that H. fusiformis might be a valuable natural antioxidative source containing both water and fatsoluble antioxidative components.
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Affiliation(s)
| | | | | | | | - J.-W. Haw
- Department of Food Science and Technology, Cheju National University, Jeju 690-756, S. Korea
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Kittipongpittaya K, Panya A, Phonsatta N, Decker EA. Effects of Environmental pH on Antioxidant Interactions between Rosmarinic Acid and α-Tocopherol in Oil-in-Water (O/W) Emulsions. J Agric Food Chem 2016; 64:6575-83. [PMID: 27494424 DOI: 10.1021/acs.jafc.6b02700] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 06/06/2023]
Abstract
Antioxidant regeneration could be influenced by various factors such as antioxidant locations and pH conditions. The effects of environmental pH on the antioxidant interaction between rosmarinic acid and α-tocopherol in oil-in-water (O/W) emulsions were investigated. Results showed that the combined antioxidants at pH 7 exhibited the strongest synergistic antioxidant activity in comparison with the combinations at other pH conditions as indicated by the interaction index. A drop in pH from 7 to 3 resulted in a reduction in the synergistic effect. However, in the case of pH 3, an additive effect was obtained. Moreover, the effect of the pH on the regeneration of α-tocopherol by rosmarinic acid in heterogeneous Tween 20 solutions was studied using EPR spectrometer. The same was true for the regeneration efficiency, where the reaction at pH 7 exhibited the highest regeneration efficiency of 0.3 mol of α-tocopheroxyl radicals reduced/mol of phenolics. However, the study on depletions of rosmarinic acid and α-tocopherol revealed that the formation of caffeic acid, an oxidative degradation product of rosmarinic acid, could be involved in enhancing the antioxidant activity observed at pH 7 rather than the antioxidant regeneration. This study has highlighted that the importance of pH-dependent antioxidant interactions does not solely rely on antioxidant regeneration. In addition, the formation of other oxidative products from an antioxidant should be taken into account.
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Affiliation(s)
- Ketinun Kittipongpittaya
- Department of Agro-Industry Technology and Management, Faculty of Agro-Industry, King Mongkut's University of Technology North Bangkok , Bangkok 10800, Thailand
| | - Atikorn Panya
- Food Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology (BIOTEC) , 113 Thailand Science Park, Phaholyothin Road, Khlong Nueng, Khlong Luang, Pathumthani 12120, Thailand
| | - Natthaporn Phonsatta
- Food Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology (BIOTEC) , 113 Thailand Science Park, Phaholyothin Road, Khlong Nueng, Khlong Luang, Pathumthani 12120, Thailand
| | - Eric A Decker
- Department of Food Science, Chenoweth Laboratory, University of Massachusetts , 100 Holdsworth Way, Amherst, Massachusetts 01003, United States
- Bioactive Natural Products Research Group, Department of Biochemistry, Faculty of Science, King Abdulaziz University , P.O. Box 80203, Jeddah 21589, Saudi Arabia
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Gori A, Ferrini F, Marzano MC, Tattini M, Centritto M, Baratto MC, Pogni R, Brunetti C. Characterisation and Antioxidant Activity of Crude Extract and Polyphenolic Rich Fractions from C. incanus Leaves. Int J Mol Sci 2016; 17:ijms17081344. [PMID: 27548139 PMCID: PMC5000740 DOI: 10.3390/ijms17081344] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [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: 06/29/2016] [Revised: 08/05/2016] [Accepted: 08/10/2016] [Indexed: 01/06/2023] Open
Abstract
Cistus incanus (Cistaceae) is a Mediterranean evergreen shrub. Cistus incanus herbal teas have been used as a general remedy in traditional medicine since ancient times. Recent studies on the antioxidant properties of its aqueous extracts have indicated polyphenols to be the most active compounds. However, a whole chemical characterisation of polyphenolic compounds in leaves of Cistus incanus (C. incanus) is still lacking. Moreover, limited data is available on the contribution of different polyphenolic compounds towards the total antioxidant capacity of its extracts. The purpose of this study was to characterise the major polyphenolic compounds present in a crude ethanolic leaf extract (CEE) of C. incanus and develop a method for their fractionation. Superoxide anion, hydroxyl and DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging assays were also performed to evaluate the antioxidant properties of the obtained fractions. Three different polyphenolic enriched extracts, namely EAC (Ethyl Acetate Fraction), AF1 and AF2 (Aqueos Fractions), were obtained from CEE. Our results indicated that the EAC, enriched in flavonols, exhibited a higher antiradical activity compared to the tannin enriched fractions (AF1 and AF2). These findings provide new perspectives for the use of the EAC as a source of antioxidant compounds with potential uses in pharmaceutical preparations.
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Affiliation(s)
- Antonella Gori
- Department of Agrifood Production and Environmental Sciences (DiSPAA), University of Florence, 50019 Sesto Fiorentino (Florence), Italy.
- Trees and Timber Institute (IVALSA), The National Research Council of Italy (CNR), 50019 Sesto Fiorentino (Florence), Italy.
| | - Francesco Ferrini
- Department of Agrifood Production and Environmental Sciences (DiSPAA), University of Florence, 50019 Sesto Fiorentino (Florence), Italy.
| | - Maria Cristina Marzano
- Department of Agrifood Production and Environmental Sciences (DiSPAA), University of Florence, 50019 Sesto Fiorentino (Florence), Italy.
| | - Massimiliano Tattini
- Institute for Plant Protection (IPSP), The National Research Council of Italy (CNR), 50019 Sesto Fiorentino (Florence), Italy.
| | - Mauro Centritto
- Trees and Timber Institute (IVALSA), The National Research Council of Italy (CNR), 50019 Sesto Fiorentino (Florence), Italy.
| | - Maria Camilla Baratto
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy.
| | - Rebecca Pogni
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy.
| | - Cecilia Brunetti
- Department of Agrifood Production and Environmental Sciences (DiSPAA), University of Florence, 50019 Sesto Fiorentino (Florence), Italy.
- Trees and Timber Institute (IVALSA), The National Research Council of Italy (CNR), 50019 Sesto Fiorentino (Florence), Italy.
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Trofimova NN, Stolpovskaya EV, Babkin VA, Fedorov SV, Kalabin GA, Goryainov SV, Zolotarev EE, Safronovc AY, Kashevskii AV, Zhitov RG. The structure and electrochemical properties of metal complexes with dihydroquercetin. Russ J Bioorg Chem 2015. [DOI: 10.1134/s1068162015070146] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Liao Y, Wang N, Ni Y, Xu J, Shao S. Electrochemical sensor based on Nbim/CNT composite for selective determination of luteolin in the flavonoids. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.07.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Natural products have been used in medicine for many years. Many top-selling pharmaceuticals are natural compounds or their derivatives. These plant- or microorganism-derived compounds have shown potential as therapeutic agents against cancer, microbial infection, inflammation, and other disease conditions. However, their success in clinical trials has been less impressive, partly due to the compounds’ low bioavailability. The incorporation of nanoparticles into a delivery system for natural products would be a major advance in the efforts to increase their therapeutic effects. Recently, advances have been made showing that nanoparticles can significantly increase the bioavailability of natural products both in vitro and in vivo. Nanotechnology has demonstrated its capability to manipulate particles in order to target specific areas of the body and control the release of drugs. Although there are many benefits to applying nanotechnology for better delivery of natural products, it is not without issues. Drug targeting remains a challenge and potential nanoparticle toxicity needs to be further investigated, especially if these systems are to be used to treat chronic human diseases. This review aims to summarize recent progress in several key areas relevant to natural products in nanoparticle delivery systems for biomedical applications.
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Affiliation(s)
- Rebekah Watkins
- Department of Biochemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA ; Program in Nanoscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Ling Wu
- Department of Biochemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Chenming Zhang
- Center for Drug Discovery, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA ; Department of Biological Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA ; Institute for Critical Technology and Applied Science, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Richey M Davis
- Center for Drug Discovery, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA ; Institute for Critical Technology and Applied Science, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA ; Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Bin Xu
- Department of Biochemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA ; Center for Drug Discovery, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
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Kolli D, Amperayani KR, Parimi U. Total Phenolic Content and Antioxidant Activity of Morinda tinctoria Leaves. Indian J Pharm Sci 2015; 77:226-30. [PMID: 26009658 PMCID: PMC4442474 DOI: 10.4103/0250-474x.156616] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Revised: 11/03/2014] [Accepted: 03/24/2015] [Indexed: 11/24/2022] Open
Abstract
The antioxidant activity and total phenolic content of Morinda tinctoria leaves was evaluated. The successively extracted leaves of Morinda tinctoria using various solvents was analyzed for their total phenolic content. The extracts were subjected to column chromatography for the isolation of bioactive molecules. In vitro antioxidant activity was evaluated by employing different assays, including 2,2-diphenyl-1-picrylhydrazyl, nitric oxide scavenging assay and phosphomolybdenum reducing power assay. The 2,2-diphenyl-1-picrylhydrazyl radical scavenging efficacy of hexane extract is significant at higher concentration (500 μg/ml-91.2±0.05%) and the efficacy at lower concentration is more significant for ethyl acetate extract (100 μg/ml - 65.1±0.05%). The total phenolic content was highest in methanol extract (5.30±0.011 μg/mg). Cynarin, a hydroxy cinnamic acid was isolated from chloroform extract; oleuropein, a polyphenolic iridoid was isolated from methanol extract. The results obtained suggeted that Morinda tinctoria leaf extracts possessed antioxidant properties and might offer protection from free radicals. Two compounds, cynarin and oleuropein were reported for the first time from Morinda tinctoria leaves.
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Affiliation(s)
- Deepti Kolli
- Department of Chemistry, GIS, GITAM University, Visakhapatnam-530 041, India
| | - K R Amperayani
- Department of Chemistry, GIS, GITAM University, Visakhapatnam-530 041, India
| | - Umadevi Parimi
- Department of Chemistry, GIS, GITAM University, Visakhapatnam-530 041, India
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Devi HP, Mazumder PB, Devi LP. Antioxidant and antimutagenic activity of Curcuma caesia Roxb. rhizome extracts. Toxicol Rep 2015; 2:423-8. [PMID: 28962377 DOI: 10.1016/j.toxrep.2014.12.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 12/29/2014] [Accepted: 12/29/2014] [Indexed: 12/14/2022] Open
Abstract
DPPH forms purple color when dissolved in solution and its color is altered to slightly yellowish color with the intervention of rhizome extracts of Curcuma caesia Roxb.at different concentrations showing the scavenging activity against the free radicals generated by DPPH. The scavenging activity of the extracts tested follows the order EECC>MECC>EaECC>AECC. Total phenolic and reducing ability were also found to be increased in ethanolic extract as compared to other extracts. EECC, MECC, AECC were selected to test the antimutagenic activity against Cyclophosphamide (CP) using Salmonella typhimurium strains TA98 and TA100. S9 mix prepared from male mice liver was used to activate the cyclophosphamide. Cyclophosphamide produces free radicals Phosphoramide and Acrolein on activation with S9 mix causing mutations inside the living system which found to be ammeliorated by the secondary metabolites present in plants. All the extracts tested were found to be non mutagenic. CP can also act as positive control for the strain TA98 which was not reported ealier and this can be inhibited by the used of rhizome of Curcuma caesia Roxb. Extract.
The rhizomes of Curcuma caesia Roxb. (zingiberacea) are traditionally used in treatment of various ailments and metabolic disorders like leukoderma, asthma, tumours, piles, bronchitis, etc. in Indian system of medicine. Considering the importance of natural products in modern phytomedicine, the antioxidant and antimutagenic activities of C. caesia Roxb. rhizome extract and its fractions were evaluated. The ethanolic fraction showed highest antioxidant activity by DPPH assay (86.91%) comparable to ascorbic acid (94.77%) with IC50 value of 418 μg/ml for EECC followed by MECC (441.90 μg/ml) > EAECC(561 μg/ml) > AECC(591 μg/ml). Based on the antioxidant activity, three of the rhizome extracts were evaluated for their antimutagenic properties against indirect acting mutagen cyclophosphamide (CP) using Salmonella typhimurium strains TA98 and TA100. The antimutagenic activity of the extracts against indirect acting mutagen cyclophosphamide in the presence of mammalian metabolic activation system was found to be significant (p < 0.01, p < 0.05). All the extracts showed similar antimutagenicity in dose dependent manner. The total phenolic content as well as reducing ability of the extracts was also determined.
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Bazhenov BN, Eliseeva GD, Zolotarev EE, Kashevskii AV, Safronov AY, Finkelshtein BL. Antioxidant and electrochemical properties of dihydroquercetin monosuccinate, the novel water-soluble bioflavonoid derivative. Russ J Bioorg Chem 2014. [DOI: 10.1134/s1068162014070024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Marteau C, Favier D, Nardello-rataj V, Aubry J. Dramatic solvent effect on the synergy between α-tocopherol and BHT antioxidants. Food Chem 2014; 160:190-5. [DOI: 10.1016/j.foodchem.2014.03.070] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 02/06/2014] [Accepted: 03/12/2014] [Indexed: 11/23/2022]
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29
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Zolotarev E, Kashevskii A, Bazhenov B, Finkelshtein B, Safronov A. The novel water soluble flavonoid dihydroquercetin monosuccinate: A cyclic voltammetry. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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30
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Moţ AC, Coman C, Miron C, Damian G, Sarbu C, Silaghi-Dumitrescu R. An assay for pro-oxidant reactivity based on phenoxyl radicals generated by laccase. Food Chem 2014; 143:214-22. [DOI: 10.1016/j.foodchem.2013.07.128] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 06/13/2013] [Accepted: 07/25/2013] [Indexed: 01/26/2023]
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Lee SH, Choi JI, Heo SJ, Park MH, Park PJ, Jeon BT, Kim SK, Han JS, Jeon YJ. Diphlorethohydroxycarmalol isolated from Pae (Ishige okamurae) protects high glucose-induced damage in RINm5F pancreatic β cells via its antioxidant effects. Food Sci Biotechnol 2012. [DOI: 10.1007/s10068-012-0031-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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Ganie SA, Amin S, Hamid R, Hamid A, Majeed R, Qurishi Y, Zargar BA, Masood A, Zargar MA. Podophyllum hexandrum aqueous extract as a potential free radical scavenger. Redox Rep 2012; 17:54-62. [PMID: 22564348 PMCID: PMC6837480 DOI: 10.1179/1351000212y.0000000004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 10/31/2022] Open
Abstract
The present study was undertaken to evaluate the effect of the aqueous extract of Podophyllum hexandrum against free radical-mediated damage and also explore its anticancer activity. The extract exhibited significant activity in scavenging 1, 1-diphenyl-2-picryl-hydrazyl radicals, (•)OH radical-mediated DNA damage, and lipid peroxide production in rat liver microsomes. The extract was also tested for its reducing abilities. The activity of liver marker enzymes and antioxidant defense enzymes in rat liver homogenate was assessed in control and carbon tetrachloride (CCl(4))-treated animals. It was observed that CCl(4)-induced changes viz., increases in the activities of aspartate aminotransferase, alanine aminotransferase, and lactate dehydrogenase, a decrease in reduced glutathione as well as decreases in the activities of superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase, and glutathione-S-transferase. All these parameters showed reversal when pretreated with aqueous extract of P. hexandrum. Podophylotoxin and etoposide are the two known anticancer agents derived from P. hexandrum and interestingly the aqueous extract of P. hexandrum showed a typical DNA ladder formation in HL-60 cells confirming its role as an inducer of apoptosis. The results obtained suggest that the plant extract exhibits inhibition of and free radical production and lipid peroxidation, increase in antioxidant enzyme activities, revealing its antioxidant properties, and is also able to show potent anticancer activity as depicted by its ability to cause fragmentation of DNA.
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Affiliation(s)
| | - Shajrul Amin
- Department of BiochemistryUniversity of Kashmir, Srinagar, India
| | - Rabia Hamid
- Department of BiochemistryUniversity of Kashmir, Srinagar, India
| | - Abid Hamid
- Indian Institute of Integrative Medicine Jammu (IIIM), India
| | - Rabiya Majeed
- Indian Institute of Integrative Medicine Jammu (IIIM), India
| | - Yasrib Qurishi
- Indian Institute of Integrative Medicine Jammu (IIIM), India
| | - Bilal A. Zargar
- Department of Pharmaceutical SciencesUniversity of Kashmir, Srinagar, India
| | - Akbar Masood
- Department of BiochemistryUniversity of Kashmir, Srinagar, India
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An CB, Li D, Liang R, Bu YZ, Wang S, Zhang EH, Wang P, Ai XC, Zhang JP, Skibsted LH. Chain length effects in isoflavonoid daidzein alkoxy derivatives as antioxidants: a quantum mechanical approach. J Agric Food Chem 2011; 59:12652-12657. [PMID: 22007884 DOI: 10.1021/jf2030314] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Daidzein, an isoflavonoid with known prooxidative effects in heterogeneous lipid/water systems, changes to an antioxidant for 7-n-alkoxy derivatives of daidzein. For an alkyl length increasing from 4 to 8, 12, and 16 carbons, the oxidation potential decreases gradually from 1.09 V (vs NHE) for daidzein (D) to 0.94 V for D16 in tetrahydrofuran as determined by cyclic voltammetry at 25 °C. The prooxidative effects transform into antioxidative effects from D8 with a maximal effect for D12 for aqueous phase initiation of lipid oxidation in liposomes despite a gradual decrease in Trolox equivalent antioxidant capacity (TEAC) with increasing alkyl chain length. Quantum mechanical calculations using density functional theory (DFT) showed that the bond dissociation energy of the O-H bond of the 4'-phenol is constant along the homologue series in contrast to Δμ, the change in dipole moment upon hydrogen atom donation, which increases for increasing chain length. The frontier orbital energy gap goes through a maximum for D12. The change in the A-to-B dihedral angle upon hydrogen atom donation further shows a maximum for D12 of 6.45°. The importance of these microscopic properties for antioxidative activity was confirmed by a change in liposome fluorescence anisotropy using a fluorescent probe showing maximal penetration into the lipid bilayer for D12 along the homologue series.
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Affiliation(s)
- Cun-Bin An
- Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China
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35
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Zahan R, Ripa FA, Alam MB, Haque MA, Mosaddik M, Nahar L. Hypoglycemic and in Vitro Antioxidant Effects of Methanolic extract of Marsilea quadrifolia Plant. ACTA ACUST UNITED AC 2011. [DOI: 10.5530/pj.2011.26.14] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mishra SL, Sinhamahapatra PK, Nayak A, Das R, Sannigrahi S. In vitro Antioxidant Potential of Different Parts of Oroxylum indicum: A Comparative Study. Indian J Pharm Sci 2011; 72:267-9. [PMID: 20838540 PMCID: PMC2929795 DOI: 10.4103/0250-474x.65013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Revised: 11/27/2009] [Accepted: 03/27/2010] [Indexed: 01/18/2023] Open
Abstract
The present study evaluated the in vitro antioxidant potential of different parts of Oroxylum indicum. 2,2-diphelyl 1-picrylhydrazyl (DPPH), nitric oxide, superoxide anion and hydroxyl radical scavenging potential and reductive ability assay of methanol extract of different parts i.e. root, root bark, stem, stem bark, leaves and fruits were performed. Leaves and bark extracts exhibits highest free radical scavenging activity than bark, stem and fruit extract. Leaves extract showed maximum reductive ability and found to contain maximum amount of polyphenolic compounds. The highest free radical activity may be due to presence of polyphenolic compounds.
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Affiliation(s)
- S L Mishra
- Institute of Pharmacy and Technology, Salipur, Cuttack, Orissa-754 202, India
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Zhao D, Zhang X, Feng L, Qi Q, Wang S. Sensitive electrochemical determination of luteolin in peanut hulls using multi-walled carbon nanotubes modified electrode. Food Chem 2011; 127:694-8. [PMID: 23140721 DOI: 10.1016/j.foodchem.2010.12.125] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 11/01/2010] [Accepted: 12/30/2010] [Indexed: 11/25/2022]
Abstract
A simple and highly sensitive electrochemical method was developed for the determination of trace-level luteolin, based on the multi-walled carbon nanotubes (MWNTs) modified glassy carbon electrode (GCE). The electrochemical behaviours of luteolin indicate that MWNTs modified glassy carbon electrode (MWNTs/GCE) can greatly enhance the electrocatalytic activity towards the redox of luteolin. It leads to a considerable improvement of the redox peak current for luteolin and allows the development of a highly sensitive voltammetric sensor for the determination of luteolin. A series of experimental parameters including the pH of supporting electrolyte, accumulation potential and time were optimised. The results showed that the oxidative peak currents increased linearly with the concentration of luteolin in the range of 2.0×10(-10) to 3.0×10(-9)M, with a detection limit of 6.0×10(-11)M (S/N=3). The analytical performance of this sensor has been evaluated for detection of luteolin in peanut hulls as a real sample.
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Affiliation(s)
- Dongming Zhao
- Ministry of Education, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China
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Jimenez P, Masson L, Barriga A, Chávez J, Robert P. Oxidative stability of oils containing olive leaf extracts obtained by pressure, supercritical and solvent-extraction. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.201000445] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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An CB, Liang R, Ma XH, Fu LM, Zhang JP, Wang P, Han RM, Ai XC, Skibsted LH. Retinylisoflavonoid as a Novel Membrane Antioxidant. J Phys Chem B 2010; 114:13904-10. [DOI: 10.1021/jp106734p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cun-Bin An
- Department of Chemistry, Renmin University of China, Beijing 100872, and Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1058 Frederiksberg C, Denmark
| | - Ran Liang
- Department of Chemistry, Renmin University of China, Beijing 100872, and Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1058 Frederiksberg C, Denmark
| | - Xiao-Hua Ma
- Department of Chemistry, Renmin University of China, Beijing 100872, and Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1058 Frederiksberg C, Denmark
| | - Li-Min Fu
- Department of Chemistry, Renmin University of China, Beijing 100872, and Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1058 Frederiksberg C, Denmark
| | - Jian-Ping Zhang
- Department of Chemistry, Renmin University of China, Beijing 100872, and Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1058 Frederiksberg C, Denmark
| | - Peng Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, and Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1058 Frederiksberg C, Denmark
| | - Rui-Min Han
- Department of Chemistry, Renmin University of China, Beijing 100872, and Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1058 Frederiksberg C, Denmark
| | - Xi-Cheng Ai
- Department of Chemistry, Renmin University of China, Beijing 100872, and Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1058 Frederiksberg C, Denmark
| | - Leif H. Skibsted
- Department of Chemistry, Renmin University of China, Beijing 100872, and Food Chemistry, Department of Food Science, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1058 Frederiksberg C, Denmark
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Heo SJ, Hwang JY, Choi JI, Lee SH, Park PJ, Kang DH, Oh C, Kim DW, Han JS, Jeon YJ, Kim HJ, Choi IW. Protective effect of diphlorethohydroxycarmalol isolated from Ishige okamurae against high glucose-induced-oxidative stress in human umbilical vein endothelial cells. Food Chem Toxicol 2010; 48:1448-54. [PMID: 20176069 DOI: 10.1016/j.fct.2010.02.025] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Revised: 02/09/2010] [Accepted: 02/17/2010] [Indexed: 12/01/2022]
Abstract
In the present study, the protective effect of diphlorethohydroxycarmalol (DPHC) isolated from Ishige okamurae, a brown algae, on high glucose-induced-oxidative stress was investigated using human umbilical vein endothelial cells (HUVECs). High concentration of glucose (30 mM) treatment induced cytotoxicity whereas DPHC prevented cells from high glucose-induced damage; restoring cell viability was significantly increased. In addition, the lipid peroxidation, intracellular reactive oxygen species (ROS), and nitric oxide (NO) levels induced by high glucose treatment were effectively inhibited by addition of DPHC in a dose-dependent manner. DPHC also suppressed the over-expressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) proteins as well as nuclear factor-kappa B (NF-kappaB) activation induced by high glucose in HUVECs. These finding indicate that DPHC might be used as potential pharmaceutical agent which will reduce the damage caused by high glucose-induced-oxidative stress associated with diabetes.
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Affiliation(s)
- Soo-Jin Heo
- Marine Living Resources Research Department, Korea Ocean Research and Development Institute, Ansan, Republic of Korea
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Cetojević-Simin DD, Canadanović-Brunet JM, Bogdanović GM, Djilas SM, Cetković GS, Tumbas VT, Stojiljković BT. Antioxidative and antiproliferative activities of different horsetail (Equisetum arvense L.) extracts. J Med Food 2010; 13:452-9. [PMID: 20170379 DOI: 10.1089/jmf.2008.0159] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In this study we investigated antioxidative and antiproliferative activity of different horsetail (Equisetum arvense L.) extracts. The antioxidative activity was measured by the electron spin resonance (ESR) spectroscopy-spin trapping method. The influence of different horsetail extracts during lipid peroxidation of (1) sunflower oil induced by the lipophilic azo-initiator 4,4'-azobis(4-cyanovaleric acid) and (2) soybean phosphatidylcholine liposomes induced by the hydrophilic azo-initiator 2,2'-azobis(2-amidinopropane) dihydrochloride was studied. Antiproliferative activity was measured using the sulforhodamine B colorimetric assay on the human cancer cell lines HeLa, HT-29, and MCF7. The results of ESR analysis confirmed that the extracts investigated suppressed the formation of lipid peroxyl radicals in both systems investigated in a dose-dependent manner. The results indicate that n-butanol, methanol, ethyl acetate, and water extracts had significant peroxyl radical scavenging activity. Extracts inhibited cell growth that was dependent on cell line, type of extract, and extract concentration. Ethyl acetate extract exhibited the most prominent antiproliferative effect, without inducing any cell growth stimulation on human tumor cell lines. The results obtained suggest that the horsetail extracts could be used as an easily accessible source of natural antioxidants and as potential phytochemicals.
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Pasanphan W, Buettner GR, Chirachanchai S. Chitosan gallate as a novel potential polysaccharide antioxidant: an EPR study. Carbohydr Res 2010; 345:132-40. [PMID: 19889400 PMCID: PMC3695485 DOI: 10.1016/j.carres.2009.09.038] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2009] [Revised: 09/25/2009] [Accepted: 09/30/2009] [Indexed: 01/29/2023]
Abstract
A novel biopolymer-based antioxidant, chitosan conjugated with gallic acid (chitosan galloylate, chitosan-GA), is proposed. Electron paramagnetic resonance (EPR) demonstrates a wide range of antioxidant activity for chitosan-GA as evidenced from its reactions with oxidizing free radicals, that is, 1,1-diphenyl-2-picryl-hydrazyl (DPPH), horseradish peroxidase (HRP)-H(2)O(2), carbon-centered alkyl radicals, and hydroxyl radicals. The EPR spectrum of the radical formed on chitosan-GA was attributed to the semiquinone radical of the gallate moiety. The stoichiometry and effective concentration (EC(50)) of the DPPH free radical with chitosan-GA show that the radical scavenging capacity is maintained even after thermal treatment at 100 degrees C for an hour. Although the degree of substitution of GA on chitosan was about 15%, its antioxidant capacity, that is, the reaction with carbon-centered and hydroxyl radicals, is comparable to that of GA.
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Affiliation(s)
- Wanvimol Pasanphan
- The Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Garry R. Buettner
- Free Radical and Radiation Biology, ESR Facility, The University of Iowa, Iowa City, IA 52242-1181, USA
| | - Suwabun Chirachanchai
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
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Yao X, Xu X, Fan G, Qiao Y, Cao S, Pan S. Determination of synergistic effects of polymethoxylated flavone extracts of Jinchen orange peels (Citrus Sinensis Osberk) with amino acids and organic acids using chemiluminescence. Eur Food Res Technol 2009; 229:743-50. [DOI: 10.1007/s00217-009-1100-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Altunkaya A, Becker EM, Gökmen V, Skibsted LH. Antioxidant activity of lettuce extract (Lactuca sativa) and synergism with added phenolic antioxidants. Food Chem 2009; 115:163-8. [DOI: 10.1016/j.foodchem.2008.11.082] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu A, Zhang S, Huang L, Cao Y, Yao H, Chen W, Lin X. Electrochemical oxidation of luteolin at a glassy carbon electrode and its application in pharmaceutical analysis. Chem Pharm Bull (Tokyo) 2008; 56:745-8. [PMID: 18520074 DOI: 10.1248/cpb.56.745] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Luteolin is a flavonoid reported to occur widely in many medicinal plants. The electrochemical behavior of luteolin was studied in phosphate buffer solution (PBS) of pH 4.0 at a glassy carbon electrode (GCE) by cyclic voltammetry (CV) and differential pulse voltammetric method (DPV). The results indicated the well-defined redox peak of luteolin which was involving two electrons and two protons was observed and the electrode process is adsorption-controlled. The charge transfer coefficient (alpha) was calculated as 0.66. The relationships between oxidation peak current and the concentration of luteolin are linear in the range of 1.0 x 10(-8) - 1.0 x 10(-6) M by DPV method. The detection limit had been estimated as 5.0 x 10(-9) M. The facile and rapid method has been successfully applied to the detection of luteolin in tablets.
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Affiliation(s)
- Ailin Liu
- Department of Pharmaceutical Analysis of the Fujian Meidical University, Fuzhou, China.
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Marinova E, Toneva A, Yanishlieva N. Synergistic antioxidant effect of α-tocopherol and myricetin on the autoxidation of triacylglycerols of sunflower oil. Food Chem 2008. [DOI: 10.1016/j.foodchem.2007.06.022] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Han RM, Tian YX, Becker EM, Andersen ML, Zhang JP, Skibsted LH. Puerarin and conjugate bases as radical scavengers and antioxidants: molecular mechanism and synergism with beta-carotene. J Agric Food Chem 2007; 55:2384-91. [PMID: 17300199 DOI: 10.1021/jf062796c] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The 4'-hydroxyl group of puerarin, a C-glycoside of the isoflavonoid daidzein, was shown, using 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) radical cation and stopped-flow spectroscopy and by comparison with the 7-propylpuerarin (A ring derivative) and 4'-propylpuerarin (B ring derivative), to be a more efficient radical scavenger as compared to the 7-hydroxyl group by a factor of 2, a difference increasing upon deprotonation. The difference in radical scavenging agreed with the oxidation potentials (cyclic voltammetry in acetonitrile, 0.1 M Bu4NBF4 at 25 degrees C): E/mV=862+/-3 for puerarin, 905+/-10 for 7-propylpuerarin, and 1064+/-2 for 4'-propylpuerarin relative to ferrocene/ferricenium. In aqueous solution, the reduction potential was shown to decrease for increasing pH, and deprotonation of the 4'-hydroxyl group increased radical scavenging more than deprotonation of the 7-hydroxyl group. The 7-hydroxyl was found to be more acidic (pKa1=7.20+/-0.01 in puerarin and pKa=7.23+/-0.01 in 4'-propylpuerarin) than the 4'-hydroxyl group (pKa2=9.84+/-0.08 in puerarin and pKa=9.51+/-0.02 in 7-propylpuerarin); aqueous solution, ionic strength of 0.1, and 25 degrees C. In phosphatidyl choline liposome of pH 7.4, puerarin and beta-carotene each showed a modest antioxidant activity measured as prolongation of the lag phase for formation of conjugate dienes and using the water-soluble radical initiator APPH with effects of puerarin and beta-carotene being additive. For the lipophilic initiator AMVN, the antioxidative effect decreased for puerarin and increased for beta-carotene as compared to APPH and showed a clear synergism. A regeneration of beta-carotene, effective in the liposome lipid phase as antioxidant, from the cation radical by deprotonated forms of puerarin was demonstrated in 9:1 chloroform/methanol using laser flash photolysis with k2=2.7x10(4) L mol-1 s-1 for the bimolecular process between the cation radical and the puerarin dianion.
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Affiliation(s)
- Rui-Min Han
- Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China
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