Effect of CO 2 on Colony Development by Bifidobacterium Species

This report investigates the requirement for CO 2 for colony formation by Bifidobacterium species in both anoxic and oxic environments. All tested Bifidobacterium species exhibited difficulty in developing colonies in an atmosphere of 100% N 2 but developed well when 1% CO 2 was present. In the pres...

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Bibliographic Details
Published in:Applied and environmental microbiology 2007-12, Vol.73 (23), p.7796-7798
Main Authors: Kawasaki, Shinji, Nagasaku, Masahiro, Mimura, Tsuyoshi, Katashima, Hitomi, Ijyuin, Susumu, Satoh, Takumi, Niimura, Youichi
Format: Article
Language:English
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Summary:This report investigates the requirement for CO 2 for colony formation by Bifidobacterium species in both anoxic and oxic environments. All tested Bifidobacterium species exhibited difficulty in developing colonies in an atmosphere of 100% N 2 but developed well when 1% CO 2 was present. In the presence of CO 2 , the oxygen tolerance of the tested species was not improved. In the absence of CO 2 , only B. boum , a microaerophilic species, could develop colonies under an N 2 -based 5% O 2 atmosphere, indicating that while CO 2 is not an essential factor for colony development, both CO 2 and O 2 have stimulatory effects on B. boum colony development.
ISSN:0099-2240
1098-5336
DOI:10.1128/AEM.01163-07