A water-insoluble (1→3)-β-d-glucan from the alkaline extract of an edible mushroom Termitomyces eurhizus

A water-insoluble glucan, TEINS has been isolated from the hot alkaline extract of an edible mushroom Termitomyces eurhizus. The total carbohydrate content of the polysaccharide fraction was found to be 98.4%, and it was found to contain only glucose as the monosaccharide constituent. On the basis of total acid hydrolysis, a methylation experiment, periodate oxidation and 13C NMR experiment, the repeating unit of the polysaccharide was established as:→3)-β-d-Glcp-(1→→3)-β-d-Glcp-(1→

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