Abstract
Purified, water-soluble polysaccharide (P-WSPS) of Phellodendron amurense Ruprecht consists of residues of l-rhamnose, l-arabinose, d-galactose, and d-galacturonic acid in the ratios of 29.26:22.45:31.17:17.10 (% by weight). G.l.c.m.s. analysis of methylated-reduced P-WSPS showed that it has a very complicated and highly branched structure, and consists mainly of (1→2)-linked l-rhamnose, (1→4)-linked l-arabinose, (1→4)-linked d-galactose, and (1→3)- and (1→4)-linked d-galacturonic acid. The presence of 2- O-(α- d-galactopyranosyluronic acid)- l-rhamnopyranose, 2- O-(β- d-galactopyranosyluronic acid)- l-arabinose, 4- O-(α- d-galactopyranosyluronic acid)- l-rhamnopyranose, and 4- O-(α- d-galactopyranosyluronic acid)- d-galactopyranose in the aldobiouronic acid fraction of the hydrolyzate of P-WSPS was also shown.
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