EVALUATION OF ISO METHOD AND VIDAS AUTOMATED SYSTEM FOR IDENTIFYING <i>LISTERIA</i> AND <i>SALMONELLA</i> IN SELECTED FOODS

Abstract

ABSTRACT In this study, the materials used were the dairy products cheese and butter and the baked potatoes consumed with both of these products as toppings. All samples obtained from the Istanbul market were examined for the presence of Listeria monocytogenes and Salmonella microorganisms with the International Organization for Standardization (ISO) 11290 and 6579 methods, respectively, and mini‐The Vitek Immuno Diagnostic Assay System (VIDAS). L. monocytogenes was not found in the butter and baked potato samples, while it was identified in three of the cheese samples. The Salmonella microorganism was not observed in any of the samples; however, other Enterobacteriaceae family members were isolated . An inoculation study with L. monocytogenes and Salmonella Typhi using the same samples did not find any difference in the efficiency of ISO and mini‐VIDAS methods with respect to identifying Salmonella . However, mini‐VIDAS was determined to be more efficient for identifying L. monocytogenes in samples with a low bacterial count.