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Isolation and properties of a bacteriocin‐producing Carnobacterium piscicola isolated from fish
Author(s) -
Stoffels Geesje,
Nes Ingolf F.,
Guomundsdóttir Agusta
Publication year - 1992
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1992.tb04982.x
Subject(s) - bacteriocin , bacteria , lactic acid , microbiology and biotechnology , isolation (microbiology) , biology , lysis , facultative , chemistry , biochemistry , antimicrobial , ecology , genetics
A facultative psychrotrophic lactic acid bacterium isolated from fresh fish was identified as Carnobacterium piscicola on the basis of carbohydrate utilization, G + C content and 16S RNA analysis. Its bacteriocin, designated carnocin UI49, is produced during the mid‐exponential phase of growth at temperatures between 15°C and 34°C. Carnocin UI49 is active against a large number of closely‐related lactic acid bacteria including carnobacteria, lactobacilli, pediococci and lactococci. Furthermore, the bacteriocin has a bactericidic mode of action which results in lysis of sensitive cells. Maximum bactericidal activity is observed at 34°C with a decrease in activity down to 15°C where it is completely abolished.