Inhibition of Salmonella typhimurium on agar medium and poultry skin by ultraviolet energy
1996
Sumner, S.S. | Wallner-Pendleton, E.A. | Froning, G.W. | Stetson, L.V.E.
Ultraviolet radiation (UV) was effective in destroying Salmonella typhimurium on agar plates and poultry skin. Agar plates inoculated with varying numbers of colony-forming units (CFU) of S. typhimurium (1.2 X 10(2) to 1.7 X 10(9)) were subjected to different doses of UV light to determine optimal killing. Poultry skin was also inoculated with varying CFU of S. typhimurium per 2 cm2 of skin and subjected to UV light. UV light treatment of inoculated agar plates revealed almost complete elimination (99.9%) of S. typhimurium at 2,000 microW.s.cm-2. Bacterial reduction was less effective on the surface of poultry skin when a 80.5% reduction in S. typhimurium was obtained at 2,000 microW.s.cm-2.
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