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A Method to Assess Bacteriocin Effects on the Gut Microbiota of Mice
Published on: July 25, 2017
Bacteriocin-like activity production and resistance in selected enterococci and streptococci of animal origin
Katarína Nigútová1, Peter Pristas, Peter Javorský
1Institute of Animal Physiology, Slovak Academy of Sciences, Kosice, Slovak Republic.
Abstract:
Antimicrobial proteins and peptides produced by bacteria, termed bacteriocins, are widely acknowledged to be important contributors to their producer organism survival. Enterocin A, enterocin B, enterocin P and enterolysin A belong to the best studied enterocins, i.e., bacteriocins produced by enterococci and streptococci. Twenty-one enterococcal and seven streptococcal isolates were analysed for bacteriocin-like activity production and resistance by overlay test. Up to 50% of tested strains showed antibacterial activity at least against one indicator strain. The occurrence of enterocin B structural gene in several isolates was confirmed by PCR method. The results of this study should broaden knowledge of bacteriocin-like activity production and resistance among gram-positive bacteria.
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