Laser Flash Photolysis Study on Antioxidant Properties of Hydroxycinnamic Acid Derivatives

Overview

Journal Radiat Environ Biophys

Specialties Biophysics
Environmental Health
Oncology
Radiology

Date 2006 Apr 29

PMID 16645820

Citations 1

Authors

Hongping Zhu

Hongwei Zhao

Zhaoxia Zhang

Wenfeng Wang

Side Yao

Affiliations

Soon will be listed here.

Abstract

The antioxidant properties of hydroxycinnamic acid derivatives (HCA) were studied by laser flash photolysis. The transient species with maximum absorption at 360 nm were assigned to the phenoxyl radical of HCA. The SO (4) (.-) induced oxidation of HCA was also investigated. It was shown that the interaction of SO (4) (.-) with HCA resulted in the formation of HCA phenoxyl radicals with rate constants of 2.0-3.9 x 10(9 )M(-1) s(-1). The reactions of HCA with triplet state of benzophenone were analyzed and quenching rate constants of 4.3-7.8 x 10(9 )M(-1) s(-1) were determined.

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