Journal
FOOD MICROBIOLOGY
Volume 57, Issue -, Pages 172-177Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fm.2016.02.007
Keywords
Ultraviolet light; Plastic packaging film; Sliced cheese; Foodborne pathogen; Inactivation
Funding
- Public Welfare and Safety research program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT, and Future Planning [NRF-2012M3A2A1051679]
- National Research Foundation of Korea (NRF) grant - Korea Government (MSIP) [NRF-2015R1A2A2A01004728]
- National Research Foundation of Korea [2012M3A2A1051679, 2015R1A2A2A01004728] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, the efficacy of using UV-C light to inactivate sliced cheese inoculated with Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria monocytogenes and, packaged with 0.07 mm films of polyethylene terephthalate (PET), polyvinylchloride (PVC), polypropylene (PP), and polyethylene (PE) was investigated. The results show that compared with PET and PVC, PP and PE films showed significantly reduced levels of the three pathogens compared to inoculated but non-treated controls. Therefore, PP and PE films of different thicknesses (0.07 mm, 0.10 mm, and 0.13 mm) were then evaluated for pathogen reduction of inoculated sliced cheese samples. Compared with 0.10 and 0.13 mm, 0.07 mm thick PP and PE films did not show statistically significant reductions compared to non-packaged treated samples. Moreover, there were no statistically significant differences between the efficacy of PP and PE films. These results suggest that adjusted PP or PE film packaging in conjunction with UV-C radiation can be applied to control foodborne pathogens in the dairy industry. (C) 2016 Published by Elsevier Ltd.
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