LACTIC FLORA-LISTERIA MONOCYTOGENES INTERACTION

LACTIC FLORA-LISTERIA MONOCYTOGENES INTERACTION

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The EC Regulation 2073/2005 (1) requires that food processors evaluate the capability of ready-to-use (RTE) products to support the development of Listeria monocytogenes when their pH and aW values are favourable to the growth of this microorganism.It is renown milwaukee 2485-22 that the lactic flora plays an important role in many different foods, both from a technological and a food safety standpoint.This study was aimed to observe the behaviour and the potential anti-Listeria effect of some natural lactic flora present in Italian liver patè crostini (chicken heart and liver, anchovies, onions, capers, starch, no added preservatives) through the Combase Predictor – Max Growth Rate predictive software.The natural lactic flora of the crostini fr3781 demonstrated a variable capability to inhibit the growth of Listeria monocytogenes which depends upon : the concentration of the lactic flora at the beginning of the shelf life period and the subsequent lag phase, the possible release of anti-Listeria substances, and the maximum growth rate.