INTERACTIONS BETWEEN BIFIDOBACTERIUM BIFIDUM N4 AND ESCHERICHIA COLI K-12 IN THEIR MIXED CULTURES
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概要
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The interactions between Bifidobacterium b fldum N4 (B. bfidum) and Escherichia coli K-12 (E. coli) were investigated in their mixed cultures. Under conditions in which both bacteria grew well in their pure culture, B. bifldum inhibited the growth of E. coli even when the latter was inoculated at 104-fold and preincubated for 41 hr. The inhibition in the mixed cultures appeared when the pH values were reduced below 4.6. When the lowering of pH was prevented by the addition of NaOH, no inhibition was observed. At the same initial pH of 6.5, lactic acid andd acetic acid, metabolites of B. b fidum, had more inhibitory effect on the growth of E. coli than other aliphatic fatty acids. On the other hand, in the mixed cultures with E. coli, B. bfidum grew in the absence of its essential vitamins, riboflavin and pantetheine and, furthermore, aerobically.
- 財団法人 学会誌刊行センターの論文
著者
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中村 洋
Faculty Of Pharmaceutical Sciences University Of Tokyo
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田村 善藏
Faculty Of Pharmaceutical Sciences University Of Tokyo
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矢沢 幸平
Faculty of Pharmaceutical Sciences, University of Tokyo
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矢沢 幸平
Faculty Of Pharmaceutical Sciences University Of Tokyo
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原 栄一
Faculty of Pharmaceutical Sciences, University of Tokyo
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田村 善藏
Faculty of Pharmaceutical Sciences, University of Tokyo
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