Efficacy of Chlorine and a Peroxyacetic Acid Sanitizer in Killing Listeria monocytogenes on Iceberg and Romaine Lettuce Using Simulated Commercial Processing Conditions

摘要: The efficacy of chlorine (100 μg/ml) and a peroxyacetic acid sanitizer (80 μg/ml; Tsunami 100) in killing Listeria monocytogenes inoculated at populations 1 to 2, 2 3, 4 5 log CFU/g iceberg lettuce pieces, shredded lettuce, Romaine pieces was determined by treatment conditions simulating those used commercial fresh-cut processor. lettuce/treatment solution ratio 1:100 (wt/vol), temperature 4°C, total time 30 s. Compared with washing water, containing all levels inoculum 3 or resulted significant reductions (P ≤ 0.05) pathogen populations. Populations recovered from treated were not significantly different washed regardless the level. Within type level, ...