Inhibition of Dextran and Mutan Synthesis by Cycloisomaltooligosaccharides
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概要
- 論文の詳細を見る
Novel cyclic isomaltooligosaccharides, cyclodextran, strongly inhibited the dextransucrase reaction. The inhibition was dependent on the cyclodextran concentration and greatly enhanced by the first incubation at 30℃ for 30min. Cyclodextran-heptaose and -octaose were competitive inhibitors for sucrose yielding K_i's of 0. 25 and 0. 64mM, respectively. Both reducing sugar and dextran producing activities of dextransucrase were almost equally inhibited by the cyclodextrans. Although γ-cyclodextrin, palatinose, sucrose-monocaprate, and maltitol gave 5-35% inhibition, cyclodextran-heptaose gave 95% inhibition. Moreover, water-insoluble glucan (mutan) synthesis by the glucosyltransferase from Streptococcus mutans was significantly repressed by the addition of cyclodextran.
- 社団法人日本農芸化学会の論文
- 1995-10-23
著者
-
Oguma Tetsuya
Noda Institute For Scientific Research
-
KOBAYASHI Mikihiko
National Food Research Institute
-
FUNANE Kazumi
National Food Research Institute
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