title: The structural analysis of a levan produced by Streptococcus salivarius SS2.
abstract: The structure of a water-soluble levan produced by Streptococcus salivarius SS2 has been determined by means of various chemical and instrumental methods. Methylation and periodate oxidation studies demonstrate that the levan is comprised of D-fructofuranosyl backbone residues linked beta-(2----6) (about 70%) with beta-(2----1) branches (about 30%). 13C-N.m.r. spectral analysis of the polymer is consistent with the structure determined by chemical means.
authors.affiliation: Department of Chemistry, Villanova University, PA 19085.
authors.forename: P J
authors.initials: PJ
authors.lastname: Simms
authors.forename: W J
authors.initials: WJ
authors.lastname: Boyko
authors.forename: J R
authors.initials: JR
authors.lastname: Edwards
mesh_terms: D002240:Carbohydrate Sequence; D002247:Carbon Isotopes; D005630:Fructans / Q000737:chemistry* / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008745:Methylation; D008969:Molecular Sequence Data; D010084:Oxidation-Reduction; D010504:Periodic Acid; D011135:Polysaccharides, Bacterial / Q000737:chemistry* / Q000302:isolation & purification; D013291:Streptococcus / Q000032:analysis*
chemical_list: D002247:Carbon Isotopes; D005630:Fructans; D011135:Polysaccharides, Bacterial; D010504:Periodic Acid; C009288:metaperiodate