Customization: | Available |
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Storage Method: | Normal |
Shelf Life: | >12 Months |
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Bifidobacterium is a genus of lactic acid producing, Gram-positive, non-spore forming, non-motile, anaerobic bacteria. Bifidobacteria were first discovered and isolated from the feces of a breast fed infant in 1899. They are common constituents of the indigenous microbiota in the human intestinal tract.
Bifidobacterium BB-12 is a catalase-negative, rod-shaped bacterium. It was deposited in the cell culture bank of Chr. Hansen in 1983. At the time of isolation, BB-12 was considered to belong to the species Bifidobacterium bifidum. Modern molecular classification techniques reclassified BB-12 as Bifidobacterium animalis and later to a new species Bifidobacterium lactis. The species B. lactis was later shown not to fulfill the criteria for a species and was instead included in Bifidobacterium animalis as a subspecies. Today, BB-12 is therefore classified as Bifidobacterium animalis subsp. lactis. Despite a change in the name over the years, the strain BB-12 has not changed.