title: Antimicrobial efficacy of AvGard carcase wash under industrial processing conditions.
abstract: 1. The efficacy of the AvGard Trisodium Phosphate (TSP) immersion carcase wash process was evaluated during 5 industrial trials against Salmonella, Enterobacteriaceae, thermotolerant coliforms and total aerobic count. The effect against Pseudomonas was also studied in the first 3 trials. 2. Dramatic reductions in Salmonella incidence were seen using a whole carcase rinse method. In 4 of the 5 trial sites, only one positive sample was found after AvGard treatment (average 0.5% incidence), in spite of an average control incidence of 57.7%. In the 5th site, a water-chilled broiler plant, an average control incidence of 74.0% was reduced to 9.4% after AvGard treatment. 3. In the latter case, Most Probable Number (MPN) analyses were performed on some of the Salmonella positive samples taken from the control and post-treatment series; the average MPN count per carcase on controls was 115, whereas for AvGard treated birds the figure was only 0.6 per carcase, a greater than 2 log reduction. 4. In addition, AvGard treatment gave average log reductions for all trials of: Enterobacteriaceae; 2.5 log; Coliforms; 2.7 log, and Total Aerobic Count; 1.1 log, leading to carcases substantially free of Gram negative pathogens. 5. Pseudomonas was reduced by an average of 1.7 log in the first 3 trials, dramatically reducing the carcase loading of this important spoilage organism.
authors.affiliation: Rhône-Poulenc Chemicals, Watford, England.
authors.forename: P
authors.initials: P
authors.lastname: Coppen
authors.forename: S
authors.initials: S
authors.lastname: Fenner
authors.forename: G
authors.initials: G
authors.lastname: Salvat
mesh_terms: D000818:Animals; D001420:Bacteria, Aerobic / Q000187:drug effects*; D004202:Disinfectants; D004755:Enterobacteriaceae / Q000187:drug effects*; D004926:Escherichia coli / Q000187:drug effects; D007101:Immersion; D008460:Meat / Q000382:microbiology*; D010710:Phosphates / Q000494:pharmacology; D011200:Poultry; D011549:Pseudomonas / Q000187:drug effects; D012475:Salmonella / Q000187:drug effects
chemical_list: D004202:Disinfectants; D010710:Phosphates; C018279:sodium phosphate