Increased occurrences of fresh produce-related outbreaks of @entity6766 have focused attention on effective washing processes for fruits and vegetables. A @entity6701 ( @entity3759 ) photocatalytic reaction under UV radiation provides a high rate of disinfection. The photo-killing effects of @entity3759 on bacteria in liquid cultures under experimental conditions have been widely studied. However, the disinfection effects of the @entity3759 photocatalytic reaction on fresh vegetables during a washing process have not been evaluated. Our objectives were to design a pilot-scale @entity3759 /UV photocatalytic reactor for fresh @entity10786 and to compare the bactericidal effects of the @entity3759 /UV reaction against bacteria in liquid media and on @entity10786 . @entity3759 /UV photocatalytic reactions for 40, 60, and 30 s were required for the complete killing of @entity526 , @entity2491 , and @entity5259 (initial counts of approximately 6.7 log CFU/ml), respectively. The counts of total aerobic bacteria in fresh @entity10786 and foodborne pathogenic bacteria in inoculated @entity10786 were also measured. Counts of total aerobic bacteria were reduced by 1.8 log CFU/g after @entity3759 /UV photocatalytic disinfection for 20 min compared with a 1.1-log CFU/g reduction by UV alone. @entity526 , @entity2491 , and @entity5259 (8 log CFU/ml) were inoculated onto @entity10786 , and the number of surviving bacteria in @entity10786 was determined after treatment. The @entity3759 /UV treatment exhibited 2.1-, 2.3-, and 1.8-log CFU/g reductions in the counts of @entity526 , @entity2491 , and @entity5259 , respectively, compared with 1.3-, 1.2-, and 1.2-log CFU/g reductions by UV alone. The @entity3759 /UV photocatalyst reaction showed significant bactericidal effects, indicating that this process is applicable to nonthermal disinfection of fresh vegetables.

@entity6701 /UV photocatalytic disinfection in fresh XXXX .

@entity2491 :: ('90371', 'Species') :: ['Salmonella Typhimurium'] @entity6766 :: ('MESH:D005517', 'Disease') :: ['foodborne illness'] @entity10786 :: ('4039', 'Species') :: ['carrots'] @entity6701 :: ('MESH:C009495', 'Chemical') :: ['titanium dioxide'] @entity5259 :: ('1396', 'Species') :: ['Bacillus cereus', 'B. cereus'] @entity3759 :: ('CHEBI:32234', 'Chemical') :: ['TiO2'] @entity526 :: ('562', 'Species') :: ['Escherichia coli', 'E. coli']
@entity10786 :: (4039,Species) :: ['carrots']
