BACTERIOCIN-MEDIATED INHIBITION OF CLOSTRIDIUM-BOTULINUM SPORES BY LACTIC-ACID BACTERIA AT REFRIGERATION AND ABUSE TEMPERATURES

被引:61
作者
OKEREKE, A [1 ]
MONTVILLE, TJ [1 ]
机构
[1] RUTGERS STATE UNIV, DEPT FOOD SCI, NEW JERSEY STATE AGR EXPT STN, NEW BRUNSWICK, NJ 08903 USA
关键词
D O I
10.1128/AEM.57.12.3423-3428.1991
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The bacteriocinogenicity of Lactococcus lactis ATCC 11454, Pediococcus pentosaceus ATCC 43200, P. pentosaceus ATCC 43201, Lactobacillus plantarum BN, L. plantarum LB592, L. plantarum LB75, and Lactobacillus acidophilus N2 against Clostridium botulinum spores at 4, 10, 15, and 35-degrees-C was investigated by modified deferred and simultaneous antagonism methods. All the strains, except L. acidophilus N2, produced inhibition zones on lawns of C. botulinum spores at 30-degrees-C. L. plantarum BN, L. lactis ATCC 11454, and P. pentosaceus ATCC 43200 and 43201 were bacteriocinogenic at 4, 10, and 15-degrees-C. Supplementation of brain heart infusion agar with 0 to 5% NaCl increased the radii of inhibition zones during simultaneous antagonism assays. Detectable bacteriocin activities were extracted from freeze-thawed agar cultures of L. plantarum BN and L. lactis ATCC 11454 which had been grown at 4 and 10-degrees-C. These results suggest that low levels of L. plantarum BN or L. lactis ATCC 11454, in the presence of 3 or 4% NaCl, could be formulated into minimally processed refrigerated food products for protection against possible botulism hazards.
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页码:3423 / 3428
页数:6
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