title: The structure of the fructan sinistrin from Urginea maritima.
abstract: The structure of sinistrin from red squill (Urginea maritima) was determined by methylation analysis and 13C NMR spectroscopy, using the fructans from Pucinella peisonis and quack-grass (Agropyron repens) as reference substances. Application of the reductive cleavage method showed that, of the beta-D-fructofuranosyl residues in sinistrin, 33% were 1-linked, 19% were 6-linked, 25% were terminal, and 19% were 1,6-linked. The average dp was 31 and, of the 3.24% of alpha-D-glucopyranosyl residues, 0.54% were terminal and 2.70% were 6-substituted. The fructan of quack grass was also highly branched with a (2-->6)-linked backbone, terminal alpha-D-glucopyranosyl residues, and a dp of approximately 45. The fructan from Pucinella peisonis was slightly branched, with a dp of approximately 10 and a (2-->6)-linked backbone.
authors: Institut für Chemie, Universität für Bodenkultur, Wien, Austria.
authors: T
authors: T
authors: Spies
authors: W
authors: W
authors: Praznik
authors: A
authors: A
authors: Hofinger
authors: F
authors: F
authors: Altmann
authors: E
authors: E
authors: Nitsch
authors: R
authors: R
authors: Wutka
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002247:Carbon Isotopes; D005947:Glucose / Q000032:analysis; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008745:Methylation; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000737:chemistry* / Q000302:isolation & purification; D010944:Plants / Q000737:chemistry*
chemical_list: D002247:Carbon Isotopes; D007202:Indicators and Reagents; D009844:Oligosaccharides; D005947:Glucose; C064636:sinistrin