COMPORTAMENTO DI LISTERIA MONOCYTOGENES IN PRODOTTI DELLA GASTRONOMIA: INSALATA DI RISO

The aim of this survey was to evaluate the behaviour of Listeria monocytogenes during shelf-life of rice salad. For this purpose food was contaminated with a suspension of different pathogen strains in order to obtain a concentration pair to 10 2 -10 3 cfu/g, then packed and stored at four different temperatures: 5°, 10°, 15°, 20°C. The trial lasted 4 weeks, a period longer than the shelf-life established by the producer. The results show that Listeria mono-cytogenes is not a risk for the consumer because its concentration decreases during the shelf-life period at all different storage conditions.