Antibiotic resistance and biofilm forming abilities of Listeria monocytogenes and effect of subMIC concentration of white vinegar on these virulence factors

Abstract In the present study, antibiotic resistance profiles and biofilm forming abilities of 9 Listeria monocytogenes isolates obtained from out 30 retail meat samples were determined, effect commercial white vinegar on these virulence factors in exposed to subMIC concentrations investigated. All found be resistant cefotixin oxacillin, 8 (26.6%) clindamycin, 1 isolate (3.3%) rifampicin, was show intermediate against clindamycin. Biofilm formation determined for all at 22 °C 37 (24 h, 48 h 72 h). MIC values 3.12% isolates. MIC/2 MIC/4 increased capacity by 21.2% 17.1%, respectively. After exposure concentration seven days, status tetracycline, clindamycin changed, significantly decreased 4 ( P < 0.05). The results showed that use should avoided routine sanitation applications.