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

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. m...

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Bibliographic Details
Published in:Journal of food protection 2013-11, Vol.76 (11), p.1969-1971
Main Authors: Berrang, M.E, Meinersmann, R.J, Frank, J.F
Format: Article
Language:English
Subjects:
Animals
Bacteria
Biological and medical sciences
Chickens - microbiology
Colony Count, Microbial
Confidence intervals
Cooking
Experiments
exposure duration
fillets
Food Contamination - analysis
Food Contamination - prevention & control
Food industries
Food Irradiation
Food Microbiology
Food safety
Fundamental and applied biological sciences. Psychology
Light
Listeria
Listeria monocytogenes
Listeria monocytogenes - growth & development
Listeria monocytogenes - radiation effects
Meat
Meat - microbiology
meat processing plants
Meat products
Meat quality
Pathogens
Poultry
raw chicken meat
slaughter
Ultraviolet radiation
Ultraviolet Rays
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Summary: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 time 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.
ISSN:0362-028X
1944-9097
DOI:10.4315/0362-028X.JFP-13-181