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Structure of a viscous exopolysaccharide produced by Lactobacillus helveticus K16
1Department of Food Technology, 00014 University of Helsinki, Finland.
Carbohydrate Research
|December 16, 2000
Abstract:
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].