Kinetic characteristics of the reaction of resveratrol with peroxyl radicals and natural thiols in aqueous medium

Kinetic characteristics of the reaction of resveratrol with peroxyl radicals and natural thiols... The method of competing reactions was used to determine the rate constants of the reaction of resveratrol (RVT) with peroxyl radicals formed on decomposition of the azoinitiator ААРН in aqueous solutions at 37 °С. The polymethine dye A (3,3′-di-γ-sulfopropyl-9-metylthiacarbocyanine-betaine pyridinium salt) was used as a competing acceptor of radicals. It was found that resveratrol can be involved in the reaction with natural thiols, glutathione (GSH) and cysteine (CSH), in aqueous solutions at 37 °С. The reaction of RVT with thiols (thiol—еne reaction) follows a chain mechanism and accelerates in the presence of Н2О2. The results obtained can be useful for understanding the physiological role of thiols in oxidation processes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Chemical Bulletin Springer Journals

Kinetic characteristics of the reaction of resveratrol with peroxyl radicals and natural thiols in aqueous medium

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Chemistry; Chemistry/Food Science, general; Organic Chemistry; Inorganic Chemistry
ISSN
1066-5285
eISSN
1573-9171
D.O.I.
10.1007/s11172-017-1995-1
Publisher site
See Article on Publisher Site

Abstract

The method of competing reactions was used to determine the rate constants of the reaction of resveratrol (RVT) with peroxyl radicals formed on decomposition of the azoinitiator ААРН in aqueous solutions at 37 °С. The polymethine dye A (3,3′-di-γ-sulfopropyl-9-metylthiacarbocyanine-betaine pyridinium salt) was used as a competing acceptor of radicals. It was found that resveratrol can be involved in the reaction with natural thiols, glutathione (GSH) and cysteine (CSH), in aqueous solutions at 37 °С. The reaction of RVT with thiols (thiol—еne reaction) follows a chain mechanism and accelerates in the presence of Н2О2. The results obtained can be useful for understanding the physiological role of thiols in oxidation processes.

Journal

Russian Chemical BulletinSpringer Journals

Published: Mar 14, 2018

References

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