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LATVIA UNIVERSITY OF AGRICULTURE - Latvijas ...

LATVIA UNIVERSITY OF AGRICULTURE - Latvijas ...

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VETERINARY MEDICINETHE SURVIVAL <strong>OF</strong> LISTERIA MONOCYTOGENES IN COLD-SMOKED SAUSAGESWITH AND WITHOUT STARTER CULTUREIndulis SiliņšLatvia University of Agriculturee-mail: indulis.sil@inbox.lvAbstractThe survival of inoculated in a cold-smoked sausages Listeria monocytogenes wild strains was studied. The sausageswere prepared with and without starter cultures. The survival limits of L. monocytogenes and lactic acid bacteria(LAB) were determined as colony forming units per gram (cfu g -1 ) depending on water activity (a w) and pH on 0,1 st , 3 rd , 5 th , 7 th , 14 th and 21 st days of maturation. The decreasing water activity conditioned by moisture (weight) lossduring ripening and pH decrease ensured negative polynomial growth rate of inoculated L. monocytogenes - 0.27 lg(cfu g -1 ) each day of ripening time, and - 0.65 lg (cfu g -1 ) on the first 7 days of maturation. A significant Pearson’scorrelation (p

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