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

Brazilian Journal of Microbiology

Cássia Regina Nespolo¹  Adriano Brandelli¹ 

[1] ,Universidade Federal do Rio Grande do Sul Instituto de Ciência e Tecnologia de Alimentos Laboratório de Bioquímica e Microbiologia AplicadaPorto Alegre RS ,Brasil

关键词: lactic acid bacteria;    bacteriocin-like substances;    ewe's raw milk;    Brazilian ovine cheese;   

DOI  :  10.1590/S1517-83822010000400020

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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