Bacillus subtilis FT-3の生産する多糖の構成糖について : Bacillus subtilis FT-3の生産する多糖に関する研究(第1報)

概要

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A bacterium, which produces an agar-like gel-forming polysaccharide, was isolated from soil and identified as Bacillus subtilis FT-3. The optimum culture medium consisted of 3% glucose, 0.3% NaNO_3 0.01% yeast extract, and other inorganic salts ; the optimum culture conditions as so far tested were 5 days' incubation on a reciprocal shaker at 30℃ with 120 rpm. In these conditions, FT-3 polysacchardie was obtained in a yield of 4.5〜5.5g per l of culture broth. The FT-3 polysacchardie (more than 1%) forms a gel when heated in aqueous suspension to 100℃ for 5〜10 min and cooled to room temperature. The polysaccharide was an acidic one composed of glucose, galactose, fucose, and glucuronic acid in an approximate molar ratio of 2 : 2 : 1 : 1.
社団法人日本生物工学会の論文
1973-09-25