Journal
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
Volume 67, Issue 2, Pages 410-414Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1271/bbb.67.410
Keywords
antioxidative compound; Crotalaria sessiliflora; free radical; tert-butyl peroxyl radical
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Seven antioxidative compounds were isolated from the EtOAc extract of the aerial part of C. sessiliflora (Japanese name, tanukimame) by activity-guided fractionation with 2,2-diphenyl-1-picrylhydrazyl (DPPH). Among the isolated compounds, hydroxyeucomic acid showed the strongest free radical-scavenging activity, which was almost identical to that of epigallocatechin gallate, against DPPH. Orientin and isoorientin showed strong anti-peroxidative activities toward linoleic acid and protective effects against the bactericidal action of the tert-butyl peroxyl radical. Their activities were nearly equal to that of epigallocatechin gallate.
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