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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
The control of Listeria innocua and Lactobacillus sakei in broth and meat slurry with the bacteriocinogenic strain Lactobacillus casei CRL705
Food Microbiology, Volume 21, No. 3, Year 2004
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Description
The effect of the bacteriocin-producing strain, Lactobacillus casei CRL705, in the control of Listeria innocua 7 and Lactobacillus sakei CRL1424 in MRS medium and meat slurry during the storage under vacuum at chill temperatures was evaluated. L. sakei CRL 1424 isolated from vacuum-packaged contaminated raw meat was identified as the predominant indigenous lactic acid bacterial flora. Co-inoculation of MRS broth at 8°C with L. casei CRL705 caused growth inhibition of L. sakei CRL1424 and L. innocua 7 after 10 and 4 days of storage, respectively. At 4°C the complete inhibition of both strains occurred within 14 and 8 days for L. sakei CRL1424 and L. innocua 7, respectively. Bacteriocin activity in broth was observed to be maximal at 8°C reaching 2130 AU ml-1 after 10 days and 400 AU ml-1 after 8 days of storage, while at 4°C maximal activities, 690 and 30 AU ml-1 were obtained at 14 and 10 days, respectively. Addition of bacteriocinogenic strain to the meat slurry did not allow the growth of L. sakei and L. innocua, showing a bacteriostatic effect during 21 days of storage at 4°C. In addition, L. casei CRL705, as a protective culture did not change significantly the pH of the meat slurry in the assayed storage conditions. The results presented here confirm that the bacteriocinogenic strain L. casei CRL705 can be used as a useful tool to improve the microbial stability and safety in the commercial meat preservation. © 2003 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Holzapfel, Wilhelm Heinrich
United States, Armonk
International Business Machines
Vignolo, Graciela Margarita
Argentina, San Miguel de Tucuman
Centro de Referencia Para Lactobacilos
Statistics
Citations: 69
Authors: 2
Affiliations: 2
Identifiers
Doi:
10.1016/j.fm.2003.08.007
ISSN:
07400020