Significance of Inoculum Size in the Lag Time of Listeria monocytogenes

Author:

Augustin Jean-Christophe1,Brouillaud-Delattre Agnès2,Rosso Laurent3,Carlier Vincent1

Affiliation:

1. Service d'Hygiène et Industrie des Denrées Alimentaires d'Origine Animale, Ecole Nationale Vétérinaire d'Alfort, F-94704 Maisons-Alfort Cedex,1

2. Agence Française de Sécurité Sanitaire des Aliments, F-94703 Maisons-Alfort Cedex,2 and

3. Pôle de Compétence en Sécurité des Aliments, Groupe Danone, F-19100 Brive-la-Gaillarde,3 France

Abstract

ABSTRACT The lag time of Listeria monocytogenes growing under suboptimal conditions (low nutrient concentrations, pH 6, and 6.5°C) was extended when the inoculum was severely stressed by starvation and the inoculum size was very small. Predictive microbiology should deal with bacterial stress and stochastic approaches to improve its value for the agro-food industry.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

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