UV irradiation of shell eggs: Effect on populations of aerobes, molds, and inoculated Salmonella typhimurium

Abstract

The effects were investigated of 254-nm UV radiation on populations of Salmonella typhimurium, aerobes. and molds on the shells of eggs. In the first experiment, the CFU of attached S. typhimurium cells on unwashed clean shell eggs were determined after 0. 1, 3, 5, and 7 min of UV treatment (620 μW/cm2) on both ends of the egg. All UV treatments significantly reduced S. typhimurium CFU (P