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Báo cáo Y học: Characterization of the exopolysaccharide produced by Streptococcus thermophilus 8S containing an open chain nononic acid
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The exopolysaccharide produced byStreptococcus thermo-philus8S in reconstituted skimmed milk is a heteropolysac-charide containing D-galactose, D-glucose, D-ribose, and N-acetyl-D-galactosamine in a molar ratio of 2:1:1:1. Furthermore, the polysaccharide contains one equivalent of a novel open chain nononic acid constituent, 3,9-dideoxy-D-threo-D-altro-nononic acid, ether-linked viaC-2 toC-6 of an additionalD-glucose per repeating unit.
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