Electrochemical determination of the antioxidant capacity: The ceric reducing/antioxidant capacity (CRAC) assay

被引：37

作者：

Ferreira, Rafael de Queiroz ^{[1
]}

Avaca, Luis Alberto ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

ELECTROANALYSIS | 2008年 / 20卷 / 12期

关键词：

antioxidant capacity; metal reducing power; chronoamperometry; CRAC assay; diamond electrode;

D O I：

10.1002/elan.200704182

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

The CRAC assay is a direct electron transfer test of antioxidant capacity for several organic compounds. The ability of eight different compounds in reducing Cc 41 was studied by chronoamperometric measurements of the remaining Ce(3+) species. The following antioxidant classification was observed: tannic acid >> quercetin > rutin > gallic acid approximate to catechin > ascorbic acid > BHA > Trolox. These results agree with others already published and a good correlation (R(2) = 0.937) was found with the classical spectrophotometric FRAP assay. The CRAC assay is simple, fast, free from sample pretreatment and applicable to nontransparent samples.

引用

页码：1323 / 1329

页数：7

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