Abstract
Two lactic acid bacteria (LAB) were selected from 100 LAB isolated from various sea products to examine their use in Dicentrarchus labrax preservation. The isolates, tentatively named strain nr 3 and 7, were identified as Lactobacillus plantarum and L. pentosus, respectively. They showed antagonistic activity against psychrotroph, pathogenic, and coliform bacteria. The antagonistic activity of strain 3 was suggested to be by bacteriocins since activity was abolished by protease treatment, while that of strain 7 was due to the effect of pH decrease caused by the produced organic acids. Their use prevented total volatile basic nitrogen contents (TVB-N) and trimethylamine (TMA) to some extent, suggesting that inoculation could extend the period of storage.
MeSH terms
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Aeromonas hydrophila / growth & development
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Animals
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Antibiosis*
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Bacterial Physiological Phenomena*
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Bacteriocins / metabolism
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Bass* / microbiology
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Biotechnology
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Colony Count, Microbial
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Enterobacteriaceae / growth & development
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Food Packaging / methods*
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Food Preservation / methods*
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Hydrogen-Ion Concentration
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Lactobacillus plantarum / chemistry
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Lactobacillus plantarum / isolation & purification
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Lactobacillus plantarum / metabolism
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Lactobacillus* / chemistry
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Lactobacillus* / isolation & purification
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Lactobacillus* / metabolism
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Listeria / growth & development
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Methylamines / analysis
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Nitrogen / analysis
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Pseudomonas / growth & development
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Refrigeration
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Salt Tolerance
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Seafood / microbiology
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Staphylococcus aureus / growth & development
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Vacuum
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Volatile Organic Compounds / analysis
Substances
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Bacteriocins
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Methylamines
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Volatile Organic Compounds
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trimethylamine
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Nitrogen