title: Structural characterization of an acidic polysaccharide from Dalbergia sissoo Roxb. leaves.
abstract: The composition and structure of an acidic polysaccharide from the leaves of Dalbergia sissoo was studied using hydrolytic, methylation, (1)H/(13)C heteronuclear multiple quantum coherence (HMQC) and periodate oxidation experiments. The repeating unit of sissoo polysaccharide was found to be composed of α-L-rhamnose, β-D-glucuronic acid, β-D-galactose and β-D-glucose in the molar ratio of 1.00:1.00:2.00:2.33, respectively. The structure of polysaccharide was mainly composed of (1→2), (1→3), (1→4) linkages. Based on extensive laboratory experiments, the structure having the repeating units of the acidic polysaccharide from sissoo leaves, with unusual branching, was established.
authors.affiliation: Chemistry Division, Forest Research Institute, Dehradun 248006, India.
authors.forename: Vikas
authors.initials: V
authors.lastname: Rana
authors.forename: Vineet
authors.initials: V
authors.lastname: Kumar
authors.forename: P L
authors.initials: PL
authors.lastname: Soni
mesh_terms: D035782:Dalbergia; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010936:Plant Extracts / Q000737:chemistry* / Q000378:metabolism; D018515:Plant Leaves; D011134:Polysaccharides / Q000737:chemistry* / Q000378:metabolism
chemical_list: D010936:Plant Extracts; D011134:Polysaccharides