Microbiological quality aspects of ready-to-eat foods with focus on antibiotic resistance and biofilm formation abilities of foodborne bacteria

Abstract In this study, microbiological quality of 93 ready-to-eat food products was determined by enumeration total aerobic bacteria and members Enterobacteriaceae . Presence Staphylococcus aureus Listeria monocytogenes in the were also investigated. Aerobic colony counts between 1.9 × 10 2 –3.4 8 CFU g −1 for 84.9% 6.7 6 43% samples. S. detected 7.5% samples, but L. not any sample. 72.9% isolates showed resistance to at least one antibiotic tested, 5 among found be resistant penicillin G against methicillin. Four produced only Staphylococcal enterotoxin A 1 isolate both B. Biofilm experiments revealed biofilm formation on polystyrene 95.8%, 87.5%, 91.6% 4 °C, 22 37 respectively, whereas all formed temperatures.