Pulsed-Light Inactivation of Food-Related Microorganisms

Abstract
The effects of high-intensity pulsed-light emissions of high or low UV content on the survival of predetermined populations of Listeria monocytogenes , Escherichia coli , Salmonella enteritidis , Pseudomonas aeruginosa , Bacillus cereus , and Staphylococcus aureus were investigated. Bacterial cultures were seeded separately on the surface of tryptone soya-yeast extract agar and were reduced by up to 2 or 6 log 10 orders with 200 light pulses (pulse duration, ∼100 ns) of low or high UV content, respectively ( P < 0.001).