Abstract：
:Bifidobacteria are part of the human gastrointestinal microbiota and are used as probiotics in functional food products because of their health promoting properties. However, only few data are available on the phenotypic characteristics displayed by human bifidobacteria strain populations. In this study we compared the in vitro tolerance to acid, bile and oxygen of the largest number of independent human intestinal strains. Bile and acid tolerance varied among species and independent strains within a species: B. adolescentis strains were the most tolerant to bile followed by Bifidobacterium longum and B. breve; B. longum, B. breve and B. dentium showed the highest viability levels after exposure to acid pH. Oxygen tolerance was largely distributed among intestinal bifidobacteria: B. longum, B. breve and B. bifidum showed the highest oxygen tolerance. B. adolescentis showed the highest susceptibility to acid and oxygen stresses. The present study gave us the opportunity to update our knowledge about the phenotypic characteristics of human intestinal bifidobacteria. B. longum and B. breve harboured the best tolerance to oxygen, bile and acid stresses. Based on such biological characters, B. longum and B. breve species showed the highest interest in terms of potential selection of human probiotics.
journal_name
Anaerobejournal_title
Anaerobeauthors
Andriantsoanirina V,Allano S,Butel MJ,Aires Jdoi
10.1016/j.anaerobe.2013.04.005subject
Has Abstractpub_date
2013-06-01 00:00:00pages
39-42eissn
1075-9964issn
1095-8274pii
S1075-9964(13)00059-0journal_volume
21pub_type
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