Production of bacteriocin-like substances by lactic acid bacteria isolated from regional ovine cheese

Lactic acid bacteria (LAB) were isolated from ovine milk and cheeses manufactured in the South Region of Brazil. Among 112 bacterial isolates investigated, 59 were chosen through a screening for LAB. Among these 59 strains of LAB, 21% showed antimicrobial, proteolytic and lipolytic activities. Based...

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Detalles Bibliográficos
Autores principales: Nespolo, Cássia Regina, Brandelli, Adriano
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade Brasileira de Microbiologia 2010
Materias:
Food Microbiology
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3769745/
https://www.ncbi.nlm.nih.gov/pubmed/24031581
http://dx.doi.org/10.1590/S1517-838220100004000020
Descripción
Sumario:Lactic acid bacteria (LAB) were isolated from ovine milk and cheeses manufactured in the South Region of Brazil. Among 112 bacterial isolates investigated, 59 were chosen through a screening for LAB. Among these 59 strains of LAB, 21% showed antimicrobial, proteolytic and lipolytic activities. Based on this screening, Lactobacillus plantarum LCN 17 and Lactobacillus rhamnosus LCN 43 were selected and tested for the production of bacteriocin-like substances (BLS). The BLS produced by both isolates showed antimicrobial activity against Listeria monocytogenes, whereas that produced by L. plantarum LCN 17 presented higher stability to different temperature, pH and enzyme treatments. These strains present potential for production of BLS, and for use as starter cultures.

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