Article ID Journal Published Year Pages File Type
10603030 Carbohydrate Polymers 2011 6 Pages PDF
Abstract
Soluble (EPS-SOL), as well as insoluble extracellular polysaccharide (EPS-INSOL), extracted from biofilm of Streptococcus mutans, were analyzed by nuclear magnetic resonance spectroscopy, methylation analysis, and a controlled Smith degradation. EPS-SOL was a branched α-glucan containing a (1 → 6)-and (1 → 3)-linkages. EPS-INSOL was a branched α-glucan with similar linkages, but with a (1 → 3)-linked main-chain partially substituted at O-6 with Glcp-(1 → 6)-Glcp-side chains. Biofilm EPS had a distinct chemical structure compared with those synthesized by plankton cells or by purified enzymes from S. mutans, which could indicate different mechanisms for its degradation.
Related Topics
Physical Sciences and Engineering Chemistry Organic Chemistry
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