Different behaviour of contaminatio

Different behaviour of contamination with L. monocytogenes was observed in PG (Table 2). Considering the highest rind
contamination levels A and B, L. monocytogenes counts did not change significantly during the first 15 days of storage at
4 C (P  0.05), while the pathogen significantly decreased (P < 0.05) after 30 days. In the case of initial contamination level B, the pathogen counts did not change (P > 0.05) throughout the shelf life considered, while when L. monocytogenes was present at an initial estimated contamination level of 1 log cfu g
1 (C), the pathogen grew for 15 days (P < 0.05) and then started to decrease significantly (P < 0.05) after 30 days until it could be detected only by the enrichment method after 55 days.