title: Isolation, purification and structural characterization of an acetylated heteroglycan from the unripe fruits of Manilkara zapota L.
abstract: A water soluble polysaccharide isolated from the hot water extract of the unripe fruits of Manilkara zapota L. was found to consist of 3-O-acyl-L-rhamnose, L-arabinose, 3-O-acetyl-D-methyl galacturonate in a molar proportion of nearly 1:1:1. Structural investigation of the polysaccharide was carried out using total hydrolysis, methylation analysis; periodate oxidation followed by GLC-MS, and NMR experiments. On the basis of the above experiments it is concluded that the following repeating unit is present in the polysaccharide.
authors.affiliation: Department of Chemistry and Chemical Technology, Vidyasagar University, Midnapore 721 102, West Bengal, India.
authors.forename: Subhas
authors.initials: S
authors.lastname: Mondal
authors.forename: Debsankar
authors.initials: D
authors.lastname: Das
authors.forename: Sadhan K
authors.initials: SK
authors.lastname: Roy
authors.forename: Syed S
authors.initials: SS
authors.lastname: Islam
mesh_terms: D000107:Acetylation; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D005638:Fruit / Q000737:chemistry*; D032129:Manilkara / Q000737:chemistry*; D008969:Molecular Sequence Data; D010936:Plant Extracts / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D010936:Plant Extracts; D011134:Polysaccharides