Use of an electrochemical method to evaluate the antioxidant activity of herb extracts from the Labiatae family

被引：103

作者：

Cosio, MS ^{[1
]}

Buratti, S ^{[1
]}

Mannino, S ^{[1
]}

Benedetti, S ^{[1
]}

机构：

[1] Univ Milan, Dipartimento Sci & Tecnol Alimentari & Microbiol, I-20133 Milan, Italy

来源：

FOOD CHEMISTRY | 2006年 / 97卷 / 04期

关键词：

herb extracts; antioxidant activity; FI; electrochemical method; voltammetric experiment; DPPH;

D O I：

10.1016/j.foodchem.2005.05.043

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

This paper describes a rapid method for the evaluation of the antioxidant activity of herb extracts from the Labiatae family. Herb methanolic extracts were analysed by using a flow injection (FI) system with an electrochemical detector equipped with a glassy carbon working electrode operating amperometrically at a potential of 0.5 V (vs. Ag/AgCl). Results obtained on extracts were compared to those obtained by using 2,2-diphenyl-l-picrylhydrazyl (DPPH-) test. A good correlation between the two methods was found (y = 1.3726x - 0.2266, r = 0.9856). The samples were also submitted to screening for their total phenol content. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：725 / 731

页数：7

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