Abstract
A new heteropolysaccharide (HEP-1) was isolated from the fruiting bodies of Hericium erinaceus. It was estimated to have a molecular weight of 1.8 × 10 4 da and showed [ α ] D 20 +129 ( c 0.295, H 2O). HEP-1 is composed of rhamnose, galactose, and glucose in the ratio of 1.19:3.81:1.00. Its structural features were investigated using composition analysis, methylation analysis, partial hydrolysis, and IR and NMR spectroscopy. The results showed that HEP-1 has a (1→6)-linked α- d-galactopyranosyl backbone with branches that are composed of rhamnose and glucose attached to O-2.
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