title: Optimizing application parameters for lactic acid and sodium metasilicate against pathogens on fresh beef, pork and deli meats.
abstract: Lactic acid (LA) and sodium metasilicate (SM) have been approved for use as antimicrobials on meat. The objectives were to determine optimum concentrations, temperatures and hot-water dips of LA and SM for reduction of Escherichia coli O157:H7, non-O157 Shiga-toxin producing E. coli (STEC), Salmonella spp., and Listeria monocytogenes on beef, pork and deli meats. LA was applied at 1, 2, 3, and 4% and SM was applied at 2, 3, 4, and 5%. SM4 and LA4 were the lowest concentrations most effective against all pathogens. LA4 and SM4, the combination of the two (LASM), and distilled water control were applied at 4, 25, and 60°C. Temperature of application had no effect on pathogens. LA or SM alone were more effective in reduction of pathogens than LASM. Regardless of anti-microbial used in post-packaging lethality treatments, there were no differences in L. monocytogenes. Treating deli meats with LA or SM did not reduce L. monocytogenes. Both LA and SM can be applied to fresh beef and pork to decrease pathogens.
authors.affiliation: Department of Animal Sciences, Auburn University, Auburn, AL 36849, United States.
authors.forename: Staci L
authors.initials: SL
authors.lastname: DeGeer
authors.affiliation: Department of Animal Sciences, Auburn University, Auburn, AL 36849, United States.
authors.forename: Luxin
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Poultry Science, Auburn University, Auburn, AL 36849, United States.
authors.forename: Gretchen N
authors.initials: GN
authors.lastname: Hill
authors.affiliation: Department of Food Science, Purdue University, West Lafayette, IN 47907, United States.
authors.forename: Manpreet
authors.initials: M
authors.lastname: Singh
authors.affiliation: Department of Poultry Science, Auburn University, Auburn, AL 36849, United States.
authors.forename: Sacit F
authors.initials: SF
authors.lastname: Bilgili
authors.affiliation: Department of Animal Sciences, Auburn University, Auburn, AL 36849, United States. Electronic address: cbratcher@auburn.edu.
authors.forename: Christy L
authors.initials: CL
authors.lastname: Bratcher
mesh_terms: D000818:Animals; D002417:Cattle; D015169:Colony Count, Microbial; D004305:Dose-Response Relationship, Drug; D005506:Food Contamination / Q000517:prevention & control; D005511:Food Handling; D005516:Food Microbiology; D005519:Food Preservation; D005520:Food Preservatives / Q000494:pharmacology; D059022:Food Safety; D005517:Foodborne Diseases / Q000517:prevention & control; D019344:Lactic Acid / Q000494:pharmacology*; D008089:Listeria monocytogenes / Q000187:drug effects; D008461:Meat Products / Q000382:microbiology*; D012475:Salmonella / Q000187:drug effects; D054323:Shiga-Toxigenic Escherichia coli / Q000187:drug effects; D017640:Silicates / Q000494:pharmacology*; D013552:Swine
chemical_list: D005520:Food Preservatives; D017640:Silicates; C025349:sodium metasilicate; D019344:Lactic Acid
keywords: Beef; Deli meats; Food safety; Lactic acid; Pork; Sodium metasilicate