| Dental Plaque Streptococci가 생산하는 세포외 다당류에 관한 연구 |
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정태영 |
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서울대학교 치과대학 구강생화학교실 |
| STUDIES ON THE EXTRACELLULAR POLYSACCHARIDES PRODUCED BY ISOLATED DENTAL PLAQUE STREPTOCOCCI |
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Tai-Young Chung |
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Dept. of Oral Biochemistry College of Dentistry, S.N.U. |
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| Abstract |
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The present investigation describes the chemical nature of purified extracellular polysaccharides synthesized by tow resembling streptococci, Streptococcus salivarius strain SD-1 and Streptococcus mitis strain SD-9, which was isolated from human dental plaque, with the following results. 1. Extracellular polysaccharide by Streptoccus salivarius strain SD-1 is recovered mostly in Fraction I-and II-45% of the presne 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 amounts of levan. 3. The Fraction I-and II-45% of both strains contain glucose and fructose, which its 70% of the same 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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