Antioxidant Activity of Different Solvents Extracts from Fruiting Bodies of Trametes gibbosa (Pers.) Fr.

In this study, the content of total phenols, total flavonoids, triterpenoid saponins and polysaccharides as well as the antioxidant activity of different solvents (water, 70% ethanol, methanol, acetone and ethyl acetate) crude extracts from fruiting bodies of Trametes gibbosa were investigated. The results showed that the water extract had the highest total phenols content (28.6 mg/g) and the methanol extract had the highest polysaccharides content (561.6 mg/g). The water extract and 70% ethanol extract demonstrated significant DPPH radical scavenging effect higher than methanol, acetone and ethyl acetate extracts at all tested concentration while the same effect for ABTS radical scavenging was only found at 0.6 mg/mL and above. For ferric-reducing power assay, the water extract was found with the highest antioxidant activity among five extracts at the concentration from 0.8 to 1.6 mg/mL. Correlation analysis showed that there was a higher correlation between total phenols, polysaccharides and antioxidant activity.