e-journal
Comparative Inactivation Studies of Listeria Monocytogenes at Room and Refrigeration Temperatures
Abstract:
Listeria monocytogenes is an important food-borne pathogen which has been associated with disease outbreaks from contaminated ready-to-eat meat products due to the improper decontamination of the equipment and food-processing areas. As this bacterium maintains the ability to grow at the low temperatures used in food-processing plants, this study was undertaken to determine the bactericidal efficacy of liquid disinfectants and the effect that low temperatures have on theirMefficacy. A standardized disinfectant testing method, the quantitative carrier test 2 (QCT-2), was used to assess the bactericidal activity of five commercially available disinfectants and four disinfectants currently used in Canadian food-processing
plants at both room temperature and refrigeration temperature. The disinfectants tested varied in their ability to inactivate L. monocytogenes; with Ethanol, VigorOX, Divosan Plus, Oxonia Active, and SU393 performing the best for use in foodprocessing plants. Little to no significant difference in efficacyMwas observed for these disinfectants at refrigeration temperature compared to room temperature.
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