INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
One-electron oxidation of antioxidants: A kinetic-thermodynamic correlation
Autor/es:
LAURA S. VILLATA, ANDREA M. BERKOVIC, MÓNICA C. GONZALEZ, DANIEL O. MÁRTIRE
Revista:
REDOX REPORT
Editorial:
MANEY PUBLISHING
Referencias:
Lugar: London; Año: 2013 vol. 18 p. 205 - 209
ISSN:
1351-0002
Resumen:
The values of the bimolecular rate constants for the reactions of 2,2′-azino-bis(3-ethylbenz-thiazoline-6-sulfonic acid) radical cation with epicatechin (((2.4±0.2)) s−1 M−1), and epigallocatechingallate ((29±5) s−1 M−1) were obtained by spectrophotometric measurements. We propose a correlation between the Gibbs energy ΔGo for the one-electron charge-transfer reactions from several antioxidants to radical species and the rate constants of the corresponding bimolecular reactions. This correlation can be used to predict rate constants of reactions of known ΔGo values.
