A Study of Antioxidant Activity About Seleno-polysaccharide of Cordyceps militaris from different areas of China

摘要

In this article, Cordyceps militaris, that from Hubei and Yunnan, were used as the research objects, to extract seleno-polysaccharide, then the antioxidant activity of seleno-polysaccharide were determined by reducing power, the scavenging capacity on superoxide anion radical and hydroxyl radical. The results indicated that, the content of selenium in Hubei and Yunnan Cordyceps militaris samples were 210.0μg/g and 57.5μg/g, respectively; the share of Se-polysaccharide in total selenium were 11.086% and 26.713%, respectively, lower degree to turn the selenium organic in Hubei Cordyceps militaris. The reducing power of seleno-polysaccharide from Hubei and Yunnan Cordyceps militaris were 0.0253,0.0297, respectively, two kinds of Cordyceps militaris have certain ability to remove superoxide anion radical and different between them, the seleno-polysaccharide of Yunnan Cordyceps militaris has a better effect to remove superoxide anion radical under different sample amount. About hydroxyl radical, there were no ability to remove it.