The effectiveness of various disinfectants against two potentially pathogenic @entity2820 strains ( @entity2820 W1024 O:9 [strain A] and @entity2820 B O:5 Lis Xz [strain B]) on shredded lettuce was examined. Dip-wash treatments using 25, 100, and 300 ppm of @entity3878 at 4 and 22 degrees C, 0.2% Orenco Peel 40, 0.1% @entity10890 , 0.5% @entity1543 , and 0.5% @entity880 at 22 degrees C were performed. Surfactants and organic acids were also tested in combination with 100 ppm of @entity3878 . Reductions of @entity2820 counts with 100 ppm (2.68 log10 for strain A and 2.36 log10 for strain B at 22 degrees C) and 300 ppm of @entity3878 (3.15 log10 for strain A and 2.55 log10 for strain B at 4 degrees C) were observed after 10 min. Inhibitory effect of different @entity3878 solutions was not significantly (P < 0.05) influenced by temperature. Surfactants in combination with @entity3878 were more effective than surfactants alone. Treatment with 0.2% Orenco Peel 40 plus 100 ppm of @entity3878 resulted in reductions of 2.69 log10 CFU/g for strain A and 3.18 1og10 CFU/g for strain B at 10 min. Dip solutions containing 0.1% @entity10890 plus 100 ppm of @entity3878 produced a significant reduction of 2.73 log10 CFU/g in strain A (P < 0.05). With the 0.5% @entity880 plus 100 ppm of @entity3878 combination, inactivation of @entity2820 was >6 log10. The bactericidal effect of disinfectants was related to the concentration, exposure time, combination with @entity3878 (surfactants and organic acids), and susceptibility of each strain. Since the presence of pathogenic @entity2820 on ready-to-use vegetables represents a health hazard, treatments as effective as 0.5% @entity880 plus 100 ppm of @entity3878 are recommended for washing of fresh lettuce.

Effectiveness of various disinfectants in the elimination of XXXX on fresh lettuce.

@entity3878 :: ('MESH:D002713', 'Chemical') :: ['chlorine'] @entity10890 :: ('MESH:D011060', 'Chemical') :: ['Tergitol'] @entity880 :: ('MESH:D019344', 'Chemical') :: ['lactic acid'] @entity1543 :: ('MESH:D019342', 'Chemical') :: ['acetic acid'] @entity2820 :: ('630', 'Species') :: ['Y. enterocolitica', 'Yersinia enterocolitica']
@entity2820 :: (630,Species) :: ['Yersinia enterocolitica']
