Structural analysis of a polysaccharide from Fructus Mori Albae

Fructus Mori Albae polysaccharide (FMAP) was first isolated from Fructus Mori Albae, and purified by Sephadex G-200 column chromatography. Its average molecular weight (M-w = 1.30 x 105) was determined by gel permeation chromatography (GPC). The polysaccharide was found to be composed Of D-galactose, D-mannose and D-glucose by TLC and GC-MS. According to IR, methylation and GC-MS, the main chain of the polysaccharide consists of (1 -> 3)-linked mannan with branches of galactosyl and glucosyl residues at O-6 on mannosyl residues of the backbone. (c) 2007 Published by Elsevier Ltd.