Chemical analysis of a new fucoglucan isolated from an edible mushroom, Termitomyces robustus

A water-soluble fucoglucan, isolated from alkali-treated edible mushroom, Termitomyces robustus, consists of l-fucose and d-glucose in a molar proportion of 1:4. Structural investigation of the polysaccharide was carried out by using total hydrolysis, methylation analysis, and periodate oxidation followed by GLC–MS, and the final structure was determined using NMR experiments (1H, 13C, DQF-COSY, TOCSY, NOESY, ROESY, HMQC, and HMBC). On the basis of the above experiments it is concluded that the following repeating unit is present in the polysaccharide:Figure optionsDownload full-size imageDownload as PowerPoint slide

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