Oxygen Radical Absorbing Capacity of Anthocyanins

• DOI: 10.1021/jf960421t
• Publication Date: 2002-07-26T05:09:23Z
• Authors: Hong Wang; Guohua Cao; Ronald L. Prior
• Keywords: Trolox; Pelargonidin; Peonidin; Petunidin

Anthocyanins are natural colorants belonging to the flavonoid family. They widely distributed among flowers, fruits, and vegetables. Using automated oxygen radical absorbance capacity (ORAC) assay developed in our laboratory, we determined antioxidant of 14 anthocyanins including aglycons delphinidin, cyanindin, pelargonidin, malvidin, peonidin, their derivatives with different sugar linkages. Among these anthocyanins, kuromanin (cyanidin-3-glucoside) had highest ORAC activity, which was 3.5 times stronger than Trolox (vitamin E analogue), while pelargonin lowest activity but still as potent Trolox. Different patterns hydroxylation glycosylation appear modulate properties. Therefore, addition colorful characteristics, possess Keywords: Anthocyanins; flavonoids; colorants; ORAC; antioxidant; peroxyl