A novel water-soluble α-(1→4)-glucan from the root of Cudrania tricuspidata

CTPS-01, a water-soluble polysaccharide, was obtained from the root of Cudrania tricuspidata and estimated to have an average molecular weight of 5.9 × 103 and to be composed of glucose residues, solely. It contains an average repeating unit of decasaccharide, having a backbone consisting of 1,4-linked α-D-glucopyranosyl residues, to which a side chain consisting of terminal and 1,4-linked α-D-glucopyranosyl residues is attached at position O-6 of the branching residues.