title: Isolation and characterization of alpha-(1-->6)-glucans from Cistanche deserticola.
abstract: Three unique polysaccharides (1-3) have been obtained from the 0.5 M NaOH extract of the stem of Cistanche deserticola Y. C. Ma. The results of methylation analysis, partial acid hydrolysis, 13C, 1H NMR, 1H-1H COSY, HMQC and HMBC spectroscopic analyses indicate that they are all composed of glucose, having a backbone of alpha-(1 --> 6)-glucan, and have different molecular weights. Their structures differ from that of linear starch.
authors.affiliation: Modern Research Center for Traditional Chinese Medicine, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100083, China.
authors.forename: X-M
authors.initials: XM
authors.lastname: Wu
authors.forename: P-F
authors.initials: PF
authors.lastname: Tu
mesh_terms: D002240:Carbohydrate Sequence; D031671:Cistanche / Q000737:chemistry*; D005936:Glucans / Q000737:chemistry / Q000302:isolation & purification*; D008969:Molecular Sequence Data; D008970:Molecular Weight; D019906:Nuclear Magnetic Resonance, Biomolecular; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D013055:Spectrophotometry, Infrared
chemical_list: D005936:Glucans