Isolation and Chemical Characterization of Polysaccharides from Iwatake,Gyrophora esculentaMiyoshi

1 January 1996

journal article
Published by Taylor & Francis in Bioscience, Biotechnology, and Biochemistry

Vol. 60 (2) , 213-215
https://doi.org/10.1271/bbb.60.213

Abstract

A heteropolysaccharide and a beta-D-glucan were isolated from a lichen, Gyrophora esculenta Miyoshi (Iwatake), by cold water and alkali extractions, respectively. The chemical properties of purified polysaccharides were examined by acid hydrolysis, methylation, and GC-MS. The heteropolysaccharide is a highly branched galactomannan-type polysaccharide, containing an alpha-(1->6)-linked D-mannan backbone, and the glucan is a linear (1->6)-beta-D-glucan. With regard to the antitumor activity, both the galactomannan and (1->6)-beta-D-glucan had moderate inhibition activities on Sarcoma 180, but lower than those of branched (1->3)-beta-D-glucans.

Keywords

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