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Structure of a neutral exopolysaccharide produced by Lactobacillus delbrueckii ssp bulgaricus LBB.B26

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CARBOHYDRATE RESEARCH
卷 342, 期 16, 页码 2430-2439

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ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2007.06.014

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Lactobacillus delbrueckii spp. bulgaricus; exopolysaccharide; lactic acid bacteria; structural analysis; NMR spectroscopy; mass spectrometry

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The neutral exopolysaccharide produced by Lactobacillus delbrueckii ssp. bulgaricus LBB.B26 in skimmed milk was found to be composed Of D-glucose and D-galactose in a molar ratio of 2:3. Linkage analysis and 1D/2D NMR (H-1 and C-13) studies performed on the native polysaccharide, and on an oligosaccharide obtained from a partial acid hydrolysate of the native polysaccharide, showed the polysaccharide to consist of branched pentasaccharide repeating units with the following structure: [GRAPHICS] (C) 2007 Elsevier Ltd. All rights reserved.

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