Journal
CARBOHYDRATE RESEARCH
Volume 343, Issue 2, Pages 301-307Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2007.10.028
Keywords
exopolysaccharide; NMR; LAB; molecular weight; Lactobacillus acidophilus
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Lactobacillus acidophilus 5e2 when grown on skimmed milk, skimmed milk supplemented with sodium formate and skimmed milk supplemented with glucose secretes a branched heteropolysaccharide having a weight average molecular weight less than 450 kDa. The exopolysaccharide has a heptasaccharide repeat unit and is composed of D-glucose, D-galactose and N-acetyl-D-glucosamine in the molar ratio 3:3:1. Using chemical techniques and 1D and 2D-NMR spectroscopy the polysaccharide has been shown to possess the following repeat unit structure: [GRAPHICS] (c) 2007 Elsevier Ltd. All rights reserved.
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