Sensitivity of Listeria monocytogenes to sanitizers used in the meat processing industry.
Nineteen Listeria monocytogenes strains were characterized by automated ribotyping, pulsed-field gel electrophoresis, and plasmid profiling to determine the relationship between genotype and sanitizer resistance. Isolates within a ribogroup had a consistent sensitivity or resistance phenotype except for ribogroup C isolates. All isolates with resistance phenotypes harbored two plasmids. The sensitivity of L. monocytogenes strains to quaternary ammonium compounds (QACs) was correlated with sensitivity to sanitizers and antibiotics with other modes of action. All isolates tested contained the mdrL gene, which encodes an efflux pump that confers resistance to QACs and is both chromosome and plasmid borne.
Romanova
Nadya
N
Canadian Research Institute for Food Safety, University of Guelph, Ontario, Canada N1G 2W1.
Favrin
Stacy
S
Griffiths
Mansel W
MW
D000818:Animals; D004202:Disinfectants / Q000494:pharmacology*; D024881:Drug Resistance, Bacterial / Q000235:genetics; D005525:Food-Processing Industry; D008089:Listeria monocytogenes / Q000187:drug effects* / Q000235:genetics; D008460:Meat / Q000382:microbiology*; D010957:Plasmids; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology
D004202:Disinfectants; D000644:Quaternary Ammonium Compounds