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A water-soluble glucan was isolated from the alkaline extract of an ectomycorrhizal fungus, Ramaria botrytis. On the basis of sugar analysis, methylation analysis, Smith degradation, partial hydrolysis, and 1D/2D NMR studies, the structure of the repeating unit of the glucan was established as: This glucan showed immunostimulating activity by NO production on RAW 264.7, a murine macrophage cell line...
An immunostimulating water-insoluble β-glucan isolated from hot alkaline extract of the fruiting bodies of an edible somatic hybrid mushroom of Pleurotus florida and Calocybe indica var. APK2 showed significant macrophage, splenocyte, and thymocyte activations. On the basis of total hydrolysis, methylation analysis, and NMR experiments ( 1 H, 13 C, DQF-COSY, TOCSY, NOESY, DEPT-135,...
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