Modelling antagonic effect of lactic acid eacteria supernatants on some pathogenic bacteria

Brazilian Archives of Biology and Technology

Augustus Caeser Franke Portella²  Susan Karp²  Gessiel Newton Scheidt²  Adenise Lorenci Woiciechwski²  Jose Luis Parada¹  Carlos Ricardo Soccol² 

[1] ,Universidade Federal do Paraná Departamento de Bioprocessos e Biotecnologia Curitiba PR ,Brasil

关键词: Statistical model;    survival analysis;    bioprotection;   

DOI  :  10.1590/S1516-89132009000700004

来源: SciELO

【 摘 要 】

This work presents a statistical model of survival analysis for three pathogenic bacterial strains (Escherichia coli, Listeria monocytogenes and Staphylococcus aureus), when treated with neutralized and non-neutralized filtered supernatants broth from cultures of Lactobacillus acidhophilus, Lactobacillus rhamnosus and Lactobacillus sake. Survival analysis is a method employed to determine the period of time from an initial stage up to the occurrence of a particular event of interest, as death or a particular culture growth failure. In order to evaluate the potential efficacy of the ahead mentioned lactic acid bacteria when used as bioprotective starters in foods, experimental data were statistically treated and expressed by simple representative curves. Following the methodology of Cox and Kaplan-Meier, it was possible to make the selection of the best bioprotective lactic starter, as a predictive tool for evaluation of shelf life and prevention of eventual risks in fresh sausages and other similar food products.

【 授权许可】

CC BY-NC   
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