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Behaviour of Salmonella Typhimurium during production and storage of artisan water buffalo mozzarella cheese.

Behaviour of Salmonella Typhimurium during production and storage of artisan water buffalo mozzarella cheese.

Authors :
Serraino, Andrea
Finazzi, Guido
Marchetti, Giacomo
Daminelli, Paolo
Riu, Raffaela
Giacometti, Federica
Losio, Marina N.
Rosmini, Roberto
Source :
Italian Journal of Animal Science; 2012, Vol. 11 Issue 3, p285-N.PAG, 5p
Publication Year :
2012

Abstract

Water buffalo mozzarella cheese (WBMC) is a fresh pasta filata cheese produced from whole chilled buffalo milk. Although pasteurization of milk and the use of defined starter cultures are recommended, traditional technology involving the use of unpasteurized milk and natural whey cultures is still employed for WBMC production in Italy. The aim of this study were to assess the behaviour of Salmonella Typhimurium during the production of artisan water buffalo mozzarella cheese and during its shelf life under different temperature conditions. Raw milk was inoculated with S. Typhimurium and the evolution of S. Typhimurium count during production and shelf life was monitored. In artisan WBMC production technology S. Typhimurium multiplied in the curd during ripening, but its growth rate expressed in log CFU/g/h was lower than the growth rate reported by theoretical predictions. Stretching proved to be a process with good repeatability and able to reduce S. Typhimurium contamination by 5.5 Log CFU/g. The intrinsic characteristics of traditional WBMC proved to be unable to obstacolate the growth of S. Typhimurium during storage in the case of thermal abuse. Control of raw milk contamination and a proper refrigeration temperature are key factors in reducing the risk for consumers. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
15944077
Volume :
11
Issue :
3
Database :
Complementary Index
Journal :
Italian Journal of Animal Science
Publication Type :
Academic Journal
Accession number :
99392571
Full Text :
https://doi.org/10.4081/ijas.2012.e53