Relationship between the content of polysaccharides, flavonoids and polyphenols from the sporocarp of Phellinus linteus and the antioxidant activity

To evaluate the antioxidant activity of active compounds in phellinus linteus, ferric reducing ability of plasma (FRAP) was used to evaluate the antioxidant activity, spectrophotography was used to determine the content of polysaccharides, flavonoids and polyphenols in seven extracts (water extract, alcohol extract, crude polysaccharide, residual liquid after alcohol sink and methylene chloride, ethyl acetate, n- butanol extracts respectively) . The results showed that, the antioxidant components were found in alcohol-soluble part, the antioxidant activity appeared positive correlation with the content of polyphenols and flavonoids (R2=0.9977 and0.9950 respectively) , polysaccharides played a less significant role than that of polyphenols and flavonoids, polyphenols and flavonoids were the main antioxidant components.