Caption: Lactococcus lactis - Gram-positive, facultatively anaerobic, coccoid prokaryote (bacterium). Lactococcus lactis, also known as Streptococcus lactis,is an important bacterium used to produce lactic acid. It belongs to the Streptococcus genus and is usually arranged in chains formed by several bacteria. Here is seen undergoing binary fission or cell division. Lactococcus lactis is one of the bacteria involved in the production of lactic acid during milk fermentation. It coverts milk lactose into lactic acid. Lactic acid is a colorless liquid that occurs in yogurt, buttermilk, and sour cream. Lactococcus lactis is essential in the production of cheese such as Roquefort, Brie and Camambert.Some strains of this bacterium can cause bacterial endocarditis.
Magnification*: x7,000
Type: SEM
Copyright 2007 Dennis Kunkel Microscopy, Inc.
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