Spectrophotometric measurement of antioxidant properties of flavones and flavonols against superoxide anion

被引：122

作者：

Magnani, L

Gaydou, EM

Hubaud, JC

机构：

[1] Fac Sci & Tech St Jerome, Lab Phytochim Marseille, F-13397 Marseille 20, France

[2] DIPTA, F-13855 Aix En Provence 3, France

来源：

ANALYTICA CHIMICA ACTA | 2000年 / 411卷 / 1-2期

关键词：

flavones; hydroxylation; methoxylation; radical scavengers; superoxide anion; free radicals; anti- or pro-oxidant activity;

D O I：

10.1016/S0003-2670(00)00717-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The antioxidant properties of 12 hydroxyflavones (including flavonols) and eight methoxyflavones were evaluated using the pyrogallol UV-VIS spectrophotometric method to generate superoxide anion. Pro- and antioxidant activity depends of the flavone concentration in the medium. Results show that the hydroxylation (on the C ring) of the 3- position (flavonols) enhanced antioxidant properties more than methoxylation. A similar phenomenon is observed for hydroxylation at the 2'-and 4'-positions (B ring). Hydroxylation or methoxylation on the 7- position (A ring), however, has a negative effect on the radical scavenger activity. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：209 / 216

页数：8