Antagonistic lactic acid bacteria isolated from goat milk and identification of a novel nisin variant Lactococcus lactis.

ABSTRACT:

Background

The raw goat milk microbiota is considered a good source of novel bacteriocinogenic lactic acid bacteria (LAB) strains that can be exploited as an alternative for use as biopreservatives in foods. The constant demand for such alternative tools justifies studies that investigate the antimicrobial potential of such strains.

Results

The obtained data identified a predominance of Lactococcus and Enterococcus strains in raw goat milk microbiota with antimicrobial activity against Listeria monocytogenes ATCC 7644. Enzymatic assays confirmed the bacteriocinogenic nature of the antimicrobial substances produced by the isolated strains, and PCR reactions detected a variety of bacteriocin-related genes in their genomes. Rep-PCR identified broad genetic variability among the

SUBMITTER: Perin LM 

PROVIDER: S-EPMC3930553 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature