Sensitivity variations of Listeria strains to the bacteriocins, lactocin 705, enterocin CRL35 and nisin

Authors
Castellano, Patricia Haydee; Farias, Maria Eugenia; Holzapfel, W.; Vignolo, Graciela Margarita
Publication Year
2001
Language
English
Format
article
Status
Published version
Description
Five strains of Listeria monocytogenes, four strains of Listeria innocua and a strain of Listeria seeligeri showed different sensitivities to lactocin 705 (17 000 AU ml-1), enterocin CRL35 (8500 AU m1-1) and nisin (2500 IU mi-1) at different phs (5, 6 and 7). The susceptibility of Listeria strains to bacteriocins at each pH was strain dependent, and it was enhanced at the low pH. L. monocytogenes had enhanced nisin tolerance while the non-nisin bacteriocins were more inhibitory with viability losses of 3-3.4 in contrast with 1.5-1.8 log cycles, respectively. Lower viability loss values were obtained with L. innocua strains with all three bacteriocins while L. seeligeri was more sensitive to nisin than to lactocin 705 or enterocin CRL35.
Fil: Castellano, Patricia Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucuman. Centro de Referencia Para Lactobacilos; Argentina
Fil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucuman. Centro de Referencia Para Lactobacilos; Argentina
Fil: Holzapfel, W.. Federal Research Centre for Nutrition; Alemania
Fil: Vignolo, Graciela Margarita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucuman. Centro de Referencia Para Lactobacilos; Argentina
Subject
BACTERIOCIN
LISTERIA
SENSITIVITY
Alimentos y Bebidas
Otras Ingenierías y Tecnologías
INGENIERÍAS Y TECNOLOGÍAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/38279