ANTIOXIDANT ACTIVITY OF POLYSACCHARIDE FROM CORN SILK IN VITRO

Li Ting, Zhou Hongli

ABSTRACT:Study on antioxidant activity of the polysaccharide from corn silk in vitro. Methods:Use clearing thiobarbituric acid method, removing 2,2 ‘- azino-bis (3 – ethylbenzothiazoline-6 – sulfonic acid) diazonium salt (ABTS) radical, chelation ferrous ion ability and clearing DPPH free radicals methods, which vitamin C and EDTA were used as positive controls. Results: IC50 (half inhibitory concentration) of lipid peroxidation,clearing ABTS radical, chelation ferrous ion ability and clearing DPPH radical were 5.424 ,4.618 ,6.056 mg/mL . Conclusion: The polysaccharide of corn silk has the antioxidant activity,which is associated with the concentration of polysaccharide from corn silk.

Keywords:Corn silk, polysaccharide, antioxidant effect, in vitro