Flavonoids from Sonneratia caseolaris
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According to the traditional medicinal usage of Sonneratia caseolaris, we tested the extract of S. caseolaris for antioxidant activity using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging effect on thin-layer chromatography. Following activity-oriented separation, two flavonoids, luteolin (1) and luteolin 7-O-β-glucoside (2), were isolated. Both of the compounds were found to possess antioxidant activity.
KeywordsSonneratia caseolaris Antioxidant DPPH Luteolin Luteolin 7-O-β-glucoside
This work was partly supported by a Grant-in-Aid from Tokyo Biochemical Research Foundation (TBRF), Japan.
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