CHEMICAL SPRAY CONDITIONS FOR REDUCING BACTERIA ON CHICKEN SKINS

Chemical spray parameters, including temperature, pressure and exposur e time, were evaluated for their effects on reducing Salmonella typhim urium on chicken skins. Pre-chilled chicken carcass skins were inocula ted with S. typhimurium and sprayed with 0.1% cetylpyridinium chloride (CPC), 10% trisodium phosphate (TSP), or 2% lactic acid (LA). In the CPC spray, the 40 degrees C treatments resulted in the greatest bacter ial reduction. The most effective spray temperatures for LA and TSP tr eatments were 40 to 55 degrees C. All chemical spray treatments at 207 -1034 kPa reduced S. typhimurium. The reduction of S. typhimurium was greatest in all treatments when sprayed with 90 sec spray and 90 sec s etting time.