Response of the microaerophilic Bifidobactetium species, B-boum and B-thermophilum, to oxygen

被引：57

作者：

Kawasaki, Shinji ^{[1
]}

Mimura, Tsuyoshi ^{[1
]}

Satoh, Takumi ^{[1
]}

Takeda, Kouji ^{[1
]}

Niimura, Youichi ^{[1
]}

机构：

[1] Tokyo Univ Agr, Dept Biosci, Setagaya Ku, Tokyo 1568502, Japan

来源：

APPLIED AND ENVIRONMENTAL MICROBIOLOGY | 2006年 / 72卷 / 10期

关键词：

NADH OXIDASE; ANAEROBIC-BACTERIA; CLOSTRIDIUM-AMINOVALERICUM; STREPTOCOCCUS-FAECALIS; PURIFICATION; METABOLISM; GROWTH; ACETOBUTYLICUM; SENSITIVITY; TOLERANCE;

D O I：

10.1128/AEM.01216-06

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

We investigated the effects of 0(2) on Bifidobacterium species using liquid shaking cultures under various 0(2) concentrations. Although most of the Bifidobacterium species we selected showed 0(2) sensitivity, two species, R boum and B. thermophilum, demonstrated microaerophilic profiles. The growth of B. bifidum and B. longum was inhibited under high-O-2 conditions accompanied by the accumulation of H2O2 in the medium, and growth was restored by adding catalase to the medium. B. boum and B. thermophilum grew well even under 20% O-2 conditions without H2O2 accumulation, and growth was stimulated compared to anoxic growth. H2O-forming NADH oxidase activities were detected dominantly in cell extracts of B. boum and R thermophilum under acidic reaction conditions (pH 5.0 to 6.0).

引用

页码：6854 / 6858

页数：5

共 39 条

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