Structure of a viscous exopolysaccharide produced by Lactobacillus helveticus K16.
A viscous extracellular polysaccharide produced by Lactobacillus helveticus K16 has been investigated. Sugar and methylation analysis, 1H and 13C NMR spectroscopy revealed that the polysaccharide is composed of a hexasaccharide repeating unit. The sequence of sugar residues was determined by use of two-dimensional nuclear Overhauser effect spectroscopy and heteronuclear multiple bond connectivity experiments. The structure of the repeating unit of the exopolysaccharide from L. helveticus K16 is as follows: carbohydrate sequence [see text].
Yang
Z
Z
Department of Food Technology, 00014 University of Helsinki, Finland.
Staaf
M
M
Huttunen
E
E
Widmalm
G
G
D002240:Carbohydrate Sequence; D008401:Gas Chromatography-Mass Spectrometry; D007778:Lactobacillus / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008969:Molecular Sequence Data; D011135:Polysaccharides, Bacterial / Q000737:chemistry*; D014783:Viscosity
D011135:Polysaccharides, Bacterial