Journal ArticleDOI
Antioxidant activity of gallates: an electrochemical study in aqueous media
S. Gunckel,Paola Santander,G. Cordano,Jorge Ferreira,Sergio Muñoz,Luis J. Núñez-Vergara,Juan A. Squella +6 more
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TLDR
From the pH-dependence of the peak current it is possible to affirm that pH 2 is the better condition for the oxidative activity of gallate radicals showing that the antioxidant behaviour of these compounds are important in the stomach acid.About:
This article is published in Chemico-Biological Interactions.The article was published on 1998-07-03. It has received 118 citations till now. The article focuses on the topics: Cyclic voltammetry & Rotating disk electrode.read more
Citations
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Gallic acid: a versatile antioxidant with promising therapeutic and industrial applications
TL;DR: This review includes various in vitro, in vivo and in silico studies providing the mode of action, radical scavenging activity, ability to inhibit lipid peroxidation, maintenance of endogenous defense systems and metal ion chelation by this triphenolic molecule, along with a comprehensive overview of factors responsible for its high antioxidant activity.
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A cyclic voltammetry method suitable for characterizing antioxidant properties of wine and wine phenolics.
TL;DR: Phenolic antioxidants are ranked by reducing strength and characterized for reversibility using cyclic voltammetry at a glassy carbon electrode, providing a qualitative assessment of wine phenolics based on reducing strength.
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Phenolic acid derivatives with potential anticancer properties--a structure-activity relationship study. Part 1: methyl, propyl and octyl esters of caffeic and gallic acids.
Sónia M. Fiuza,Catarina Gomes,L.J. Teixeira,M.T. Girão da Cruz,Maria Natalia Dias Soeiro Cordeiro,Nuno Milhazes,Nuno Milhazes,Fernanda Borges,Fernanda Borges,Maria Paula M. Marques +9 more
TL;DR: Marked structure-activity relationships (SARs)--namely the number of hydroxyl ring substituents--were found to rule the biological effect of such systems.
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Antioxidant activity of Agaricus sp. mushrooms by chemical, biochemical and electrochemical assays
Lillian Barros,Soraia Falcão,Soraia Falcão,Paula Baptista,Cristina Freire,Miguel Vilas-Boas,Isabel C.F.R. Ferreira +6 more
TL;DR: The antioxidant activity of five Agaricus sp. mushrooms was screened through chemical, biochemical and electrochemical techniques as discussed by the authors, and it was shown that mushroom extracts revealed similar electrochemical responses, suggesting similar electroactive chemical composition, and oxidation potentials more positive than those of the standards (ascorbic and gallic acids).
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Laccase-mediated functionalization of chitosan by caffeic and gallic acids for modulating antioxidant and antimicrobial properties
TL;DR: In this paper, a new strategy for the functionalization of chitosan with caffeic acid (CA) or gallic acid(GA) using laccase from Trametes versicolor is presented, yielding a product with modulated antioxidant and antimicrobial properties.
References
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Flavonoids as Antioxidants
Book
Cyclic Voltammetry: Simulation And Analysis Of Reaction Mechanisms
TL;DR: In this article, the reduction potential and electrode kinetics of cyclic Voltammetric experiments are discussed. But they do not consider the effect of the number of electrons in the system.
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Reduction potentials of flavonoid and model phenoxyl radicals. Which ring in flavonoids is responsible for antioxidant activity
TL;DR: In this paper, the reduction potentials of the flavonoid radicals were investigated using the pulse radiolysis technique and the physicochemical characteristics of the radicals closely matched those of the ring with the lower reduction potential.