Abstract
Ganoderma sinense were available in the form of log-cultivated and sawdust-cultivated fruit bodies, solid-fermentation products and liquid-fermentation mycelia. From these four forms, water extracted polysaccharides were prepared and their antioxidant properties were investigated. Among the four forms of G. sinense, mycelia showed the largest extraction polysaccharide content (14.68%). Compared with ascorbic acid, the extracted polysaccharides from four forms exhibited stronger capability of inhibiting lipid oxidation in a linoleic acid system and more efficient radical-scavenging activity on 2, 2-diphenyl-1-picrylhydrazyl (DPPH).The extracted polysaccharides from four forms could scavenge hydroxyl radicals and showed good reducing powers evidenced by their low EC50 values (< 13 mg/mL). However, the scavenging ability on superoxide-anion radicals was not found in our investigation. All extracted polysaccharides possessed good antioxidant properties except for scavenging ability on superoxide-anion radicals and could be utilized as a new dietary supplement and functional food or tea.
