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FEMS Microbiol Lett. 2009 Feb;291(1):24-34. doi: 10.1111/j.1574-6968.2008.01427.x. Epub 2008 Dec 3.

Characterization of enterocin- and salivaricin-producing lactic acid bacteria from the mammalian gastrointestinal tract.

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1
Biotechnology Department, Teagasc, Moorepark Food Research Centre, Fermoy, Cork, Ireland.

Abstract

Bacteriocin production may be a factor contributing to bacterial dominance within complex microbial populations and may therefore be a common trait within the gut microbiota. However, of 278 antimicrobial-producing culturable lactic acid bacteria (LAB) isolated from a range of mammalian intestinal sources in this study, characterization revealed just 23 distinct strains producing bacteriocin-like inhibitory substances and one Streptococcus hyointestinalis strain producing a potentially novel protease-insensitive antimicrobial. Three class II bacteriocins previously isolated from intestinal-derived LAB were identified as enterocin A and two salivaricin P-like bacteriocins. Moreover, this is the first report of intestinal-derived Streptococcus salivarius producing variants of the lantibiotic salivaricin A.

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