This study assessed a continuous in-line decontamination system for food contact surfaces and processing equipment that utilized cold atmospheric pressure plasma (CAP) generated from ambient air. The plasma system was evaluated against two common foodborne pathogens (Salmonella Typhimurium, Listeria monocytogenes) on stainless steel surfaces and against S. Typhimurium on commercial poly [ether]-thermoplastic poly [urethane] (PE-TPU) conveyor belts, under simulated conditions of a food-processing facility. A significant level of microbial inactivation was achieved, up to 3.03 ± 0.18 and 2.77 ± 0.71 logCFU/mL reductions of L. monocytogenes and S. Typhimurium respectively within 10 s total treatment on stainless steel surfaces, and a 2.56 ± 0.37 logCFU/mL reduction of S. Typhimurium within 4 s total treatment on the PE-TPU material, according to a procedure based on the well-established EN 13697:2015 industrial protocol. CAP exposure was shown to have a minor impact on the morphology and composition of the treated...
Continuous in-line decontamination of food-processing surfaces using cold atmospheric pressure air plasma.
J. L. Walsh, Centre for Plasma Microbiology, Department of Electrical Engineering and Electronics, University of Liverpool, 9 Brownlow Hill, Liverpool, L69 3GJ, UK. E-mail JLWalsh@liverpool.ac.uk
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Katsigiannis, A. S., Hojnik, N., Modic, M., Bayliss, D. L., Kovac, J., Walsh, J. L.; Continuous in-line decontamination of food-processing surfaces using cold atmospheric pressure air plasma.. IFIS Food and Health Sciences Database 2022; doi:
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