Comparative antioxidative characteristics of polysaccharide-enriched extracts from natural sclerotia and cultured mycelia in submerged fermentation of Inonotus obliquus

► We evaluated the antioxidant property of polysaccharide-enriched extracts. ► From the natural fungal sclerotia and the cultured mycelia of Inonotus obliquus. ► Both the extracts have direct and potent antioxidant activities. ► The exo- and endo-extracts from the cultured mycelia had stronger activities.