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Bifidobacterium is a genus of gram-positive, nonmotile, often branched anaerobic bacteria. They are ubiquitous inhabitants of the gastrointestinal tract [ 2 ] [ 3 ] though strains have been isolated from the vagina [ 4 ] and mouth ( B. dentium ) of mammals, including humans.
The Bifidobacteriaceae are the only family of bacteria in the order Bifidobacteriales. [3] According to the 16S rRNA-based LTP release 106 published by 'The All-Species Living Tree' Project, the order Bifidobacteriales is a clade nested within the suborder Micrococcineae, also the genus Bifidobacterium is paraphyletic to the other genera within the family, i.e. the other genera are nested ...
Bifidobacterium bifidum is a bacterial species of the genus Bifidobacterium. B. bifidum is one of the most common probiotic bacteria that can be found in the body of mammals , including humans. Structure and characteristics
Bifidobacterium longum is a Gram-positive, catalase-negative, rod-shaped bacterium present in the human gastrointestinal tract and one of the 32 species that belong to the genus Bifidobacterium. [ 2 ] [ 3 ] It is a microaerotolerant anaerobe and considered to be one of the earliest colonizers of the gastrointestinal tract of infants. [ 2 ]
Bifidobacterium adolescentis is an anaerobic species of bacteria found in the gastrointestinal tracts of humans and other primates. [1] It is one of the most abundant and prevalent Bifidobacterium species detected in human populations, especially in adults.
Although H. coagulans does produce L+lactic acid, the bacterium used in these products is not a lactic-acid bacterium, as Bacillaceae species do not belong to the lactic acid bacteria (Lactobacillales). By definition, lactic acid bacteria (Lactobacillus, Bifidobacterium) do not form spores.
Bifidobacterium animalis is a gram-positive, anaerobic, rod-shaped bacterium of the Bifidobacterium genus which can be found in the large intestines of most mammals, including humans. Bifidobacterium animalis and Bifidobacterium lactis were previously described as two distinct species.
Bifidobacterium dentium is a species of bacteria in the genus Bifidobacterium, branched anaerobic bacteria from the Bifidobacteriaceae family. B. dentium is a source of anaerobic infections, and is also tracked in polluted water to trace the source of fecal contamination. Scientists have shown that B. dentium can cause tooth decay in humans.