2003•Acta Nutrimenta SinicaRequires access

STUDY ON SCAVENGING FREE RADICALS BY ACTIVE COMPOUNDS FROM BARLEY LEAVES

Hong Zhang

Abstract

Objective: To study the scavenging capacity of extract from four kinds of barley leaves on superoxide free radical and hydroxyl free radical. Methods: Measure the content of superoxide free radical and hydroxyl free radical by nitro blue tetrazolium(NBT) photo-reduction. Results: Along with the flavonoid in the reaction liquid, the scavenging rate shows ascending trend . When the concentration of flavonoid is 12μg/ml, its scavenging rate is 95.56% and 94.12% on superoxide free radical and hydroxyl free radical respectively. Conclusion: The flavonoids of barley leave s have stronger anti-oxidative action.

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Key concepts: Chemistry, Radical, Scavenging, Superoxide, Flavonoid, Hydroxyl radical, Superoxide radical, Fenton reaction