کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10603030 | 982436 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural characterization of exopolysaccharides from biofilm of a cariogenic streptococci
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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 â 6)-and (1 â 3)-linkages. EPS-INSOL was a branched α-glucan with similar linkages, but with a (1 â 3)-linked main-chain partially substituted at O-6 with Glcp-(1 â 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 84, Issue 4, 2 April 2011, Pages 1215-1220
Journal: Carbohydrate Polymers - Volume 84, Issue 4, 2 April 2011, Pages 1215-1220
نویسندگان
Carolina P. Aires, Livia M. Tenuta, Elaine R. Carbonero, Guilherme L. Sassaki, Marcello Iacomini, Jaime A. Cury,