Domestication and antioxidant activities of five wild Sanguinoderma species
Sanguinoderma is an important group of Ganodermataceae,many physiological functions have been found in the species of the genus,which are better than those of many well-known edible and medicinal fungi.Domestication of five wild Sanguinoderma species was attempted,and the cultivation characteristics and antioxidant activities of the species were studied,including the optimal temperature of mycelial growth,basidioma development process,polysaccharide and triterpene content and biological efficiency.The results showed that the optimum temperature for mycelium growth of the five species ranged from 25 to 30℃,and 25-38 days were needed for the fruiting body growth from primordium formation to harvest of basidiomata.S.rugosum growth is fastest and sporulation is early,while Sanguinoderma sp.growth is slowest and no sporulation was observed during cultivation.The morphological characters of cultivated basidiomata were quite different among different strains.The pilea were fan-shaped,reniform to nearly circular,with surface of greyish brown,ash-black,black and beige red,and length ranged from 4.96 cm to 12.56 cm,while width ranged from 3.84 cm to 10.76 cm,and height ranged from 0 cm to 10.1 cm.The first harvest biological efficiencies were 6.59%-18.34%for different strains,and the crude polysaccharide content and the total triterpene content were 1.89%-2.95%and 0.78%-1.68%,respectively.The antioxidant activities of polysaccharides and total triterpenes were compared with those of six Ganoderma species.It was found that Sanguinoderma spp.have better antioxidant activity.Sanguinoderma sp.and S.microporum have radical scavenging rate of over 80%to DPPH,and of 28%to total oxidant,under concentration of 3 mg/mL crude polysaccharide and 1 mg/mL total triterpene,respectively.In conclusion,Sanguinoderma spp.grow fast,contain rich polysaccharide and triterpene in basidiomata,and have good antioxidant activities for potential utilization.
万方数据
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