Structural characterization of an immunoenhancing heteroglycan isolated from an aqueous extract of an edible mushroom, Lentinus squarrosulus (Mont.) Singer
Abstract
A water-soluble polysaccharide, isolated from the hot water extract of the fruiting bodies of an edible
mushroom, Lentinus squarrosulus (Mont.) Singer was found to contain D-galactose, L-fucose, and D-glucose
in a molar ratio of nearly 1:1:5. Structural investigation of the polysaccharide was carried out using acid
hydrolysis, methylation analysis, periodate oxidation study, and NMR experiments (1H, 13C, DQF-COSY,
TOCSY, NOESY, ROESY, HMQC, and HMBC). On the basis of above-mentioned experiments, the structure
of the repeating unit of the polysaccharide was established as:
This polysaccharide showed macrophage as well as splenocyte and thymocyte activation.
URI
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