Generation of food-grade lactococcal starters which produce the lantibiotics lacticin 3147 and lacticin 481

Transconjugant lactococcal starters which produce both lantibiotics lacticin 3147 and lacticin 481 were generated via conjugation of large bacteriocin-encoding plasmids. A representative of one of the resultant strains proved more effective at killing Lactobacillus fermentum and inhibiting the growt...

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Bibliographic Details
Published in:Applied and Environmental Microbiology 2003-06, Vol.69 (6), p.3681-3685
Main Authors: O'Sullivan, L, Ryan, M.P, Ross, R.P, Hill, C
Format: Article
Language:English
Subjects:
Anti-Bacterial Agents - biosynthesis
antibacterial properties
Bacteria
Bacterial Proteins - biosynthesis
Bacterial Proteins - genetics
Bacterial Proteins - pharmacology
Bacteriocins
Biological and medical sciences
biosynthesis
Cheese - microbiology
conjugation
Conjugation, Genetic
Food Microbiology
food pathogens
Food safety
Fundamental and applied biological sciences. Psychology
gene transfer
Lactobacillus - drug effects
Lactobacillus fermentum
Lactococcus lactis
Lactococcus lactis - genetics
Lactococcus lactis - metabolism
Listeria monocytogenes
Listeria monocytogenes - drug effects
Microbial Sensitivity Tests
Microbiology
Plasmids
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Summary:Transconjugant lactococcal starters which produce both lantibiotics lacticin 3147 and lacticin 481 were generated via conjugation of large bacteriocin-encoding plasmids. A representative of one of the resultant strains proved more effective at killing Lactobacillus fermentum and inhibiting the growth of Listeria monocytogenes LO28H than either of the single bacteriocin-producing parental strains, demonstrating the potential of these transconjugants as protection cultures for food safety applications.
ISSN:0099-2240
1098-5336
DOI:10.1128/AEM.69.6.3681-3685.2003