TITLE

Use of Germicidal UV Light To Reduce Low Numbers of Listeria monocytogenes on Raw Chicken Meat

AUTHOR(S)
BERRANG, M. E.; MEINERSMANN, R. J.; FRANK, J. F.
PUB. DATE
November 2013
SOURCE
Journal of Food Protection;Nov2013, Vol. 76 Issue 11, p1969
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Listeria monocytogenes is a common constituent of the microbiological community in poultry processing plants and can be found in low numbers on raw poultry. Raw meat is the most important source of this pathogen in commercial cooking facilities. Germicidal UV light was tested as a means to kill L. monocytogenes inoculated onto broiler breast fillets. Treatments at 800 µW/ cm² for 5 s to 5 min of exposure were tested against inocula of 35 to 60 cells per fillet. All fillets were sampled by rinsing in enrichment broth, and surviving pathogens were quantified using most-probable-number (MPN) analysis. Five replications each with 5 fillets per treatment were analyzed to achieve 25 sample fillets per treatment. All treatment times resulted in a significant decrease in L. monocytogenes numbers compared with paired untreated controls. Treated samples retained 0.2 to 1.5 MPN L. monocytogenes per fillet, and exposure lime had no significant effect on the number of surviving cells. A 5-s treatment with germicidal UV light has potential as an intervention method to limit the transfer of L. monocytogenes on raw skinless breast fillets from a slaughter plant to a cooking plant.
ACCESSION #
91926390

 

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