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KMID : 0362719710090120812
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Journal of the Korean Dental Association
1971 Volume.9 No. 12 p.812 ~ p.818
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STUDIES ON THE EXTRACELLULAR POLYSACCHARIDES PRODUCED BY ISOLATED DENTAL PLAQUE STREPTOCOCCI.
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Abstract
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The present investigation describes the chemical nature of purified extraceIlular polysaccharides synthesized by two resembling streptococci, Streptococcus salivarius strain SD-1 and Streptococcus mitis strain SD-9, which was isolated from hurnan dental piaque, with the following results.
1. Extracellular polysaccharide by Streptoccus salivarius strain SD-1 is recovered mostly in Fraction I- and II-45% of the present purification procedure, leaving trace amount in Fraction Ⅰ- and Ⅱ-70%.
2. The dextran is the major -polysaccharides in Fraction Ⅰ- and Ⅱ-45% of both strains with minor anicunts of levan.
3. The Fraction Ⅰ- and Ⅱ-45% of both strains contain glucose and fructose, which its 70% of the sam fractions glucose only.
4. It appears that the glycerol was the major end product of the Smith degradation of the Fraction Ⅰ- 45% of both strains.
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KEYWORD
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