細菌による澱粉の一結晶性分解成績体に就いて (第3報)
バチルス・マゼランスの一変型菌株
1950 年 70 巻 10 号 p. 572-576
詳細
1950 年 70 巻 10 号 p. 572-576
A new strain of acetone-ethanol fermenting bacteria which gives crystalline dextrin was isolated. Examination of its microbiological characteristics showed the new strain of bacteria to be very similar to Bacillus macerans. By a few days of culture at 40° in 10% potato gruel medium, and by addition of acetone to the fermenting liquid to 50%, amylase is precipitated. The optimal pH of this enzyme is 5.4, and the temperature, 50°. Digestion of starch paste with this enzyme gives crystalline dextrin with a 50% yield.
