菌物学报

2008, (01) 126-139

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不同培养基和三种金属离子对桦褐孔菌培养菌丝体的羊毛甾醇和麦角甾醇积累的影响(英文)
Effects of culture media and three metal ions on the accumulation of lanosterol and ergosterol in cultured mycelia of Inonotus obliquus

郑维发;项小燕;陈才法;王尧;赵艳霞;蒋继宏;储成才;

摘要(Abstract):

Lanosterol and ergosterol are the active principles with potential pharmacological activities in Inonotus obliquus. However, the two sterols are less accumulated in cultured mycelia of the fungus. In this study, different carbon and nitrogen sources and pH levels together with three metal ions were assayed for their effects on accumulation of the two sterols in the fungus. Among the tested media the growth medium consisting of glucose (1.5%), rice powder (0.5%), yeast extract (0.4%), wheat bran (0.1%), KH2PO4 (0.01%) and MgSO4·7H2O (0.05%) with pH level at 6.5 yielded a maximum production of the two sterols, which can further be increased following the treatment of Ag+, Cu2+ and Ca2+. Supplementing Ag+ at concentrations of 0.28 and 0.35μmol partially inhibited ergosterol biosynthesis, leading to an enhanced accumulation of lanosterol, the presence of intermediates of ergosterol biosynthetic pathway and a reduced accumulation of ergosterol in cultured mycelia of I.

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基金项目(Foundation): Natural Science Foundation of the Education Department of Jiangsu Province (No. 05KJA36012);; Natural Science Foundation of Jiangsu Province (BK2006034)

作者(Author): 郑维发;项小燕;陈才法;王尧;赵艳霞;蒋继宏;储成才;

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