Effects of extracts from Chinese medicines on the submerged fermentation of Grifola frondosa
The effects of extracts from 6 kinds of Chinese medicines on the production of biomass and exopolysaccharide in the submerged fermentation of G. frondosa were investigated in this paper. Of all the water extracts of 6 kinds of Chinese medicine,4 kinds can improve the culture of G. frondosa,2 kinds inhibite the growth,and Coix lachryma-jobi can increase the production of exopolysaccharide. As to the 6kinds of ethanol extracts of Chinese medicine,C. lachryma-jobi can enhance the growth of G. frondosa,but Radix scutellariae inhibites the growth,other 4 kinds have no significantly influence. The production of extracellular polysaccharide can be enhanced by the ethanol extracts from Oldenlandia diffusa,C.lachryma-jobi,Weeping forsythia and Astragalus membranaceus at the best levels(0.5 g/L,0.2 g/L,2.0 g/L,0.5 g/L,respectively). The ethanol extracts from R. scutellariae and Artemisia capillaris can inhibit the secretion of exopolysaccharide. Bio-active polysaccharide of G. frondosa can be produced by adding appropriate amount Chinese medicines in the substrate to culture G. frondosa,such as O. diffusa,C.lachryma-jobi,W. forsythia and A. membranaceus.