title: Control of Listeria monocytogenes on commercially-produced frankfurters prepared with and without potassium lactate and sodium diacetate and surface treated with lauric arginate using the Sprayed Lethality in Container (SLIC(R)) delivery method.
abstract: Viability of Listeriamonocytogenes was monitored on frankfurters formulated with or without potassium lactate and sodium diacetate at a ratio of ca. 7:1 and treated with lauric arginate (LAE; 22 or 44ppm) using the Sprayed Lethality in Container (SLIC(R)) delivery method. Without antimicrobials, pathogen numbers remained relatively constant at ca. 3.3logCFU/package for ca. 30d, but then increased to ca. 8.4logCFU/package over 120d. Regardless of whether or not lactate and diacetate were included, when treated with LAE, pathogen numbers decreased from ca. 3.3logCFU/package to ca. 1.5logCFU/package within 2h, but then increased to 7.3 and 6.7logCFU/package, respectively, after 120d. When frankfurters were formulated with lactate and diacetate and treated with LAE, pathogen numbers decreased by ca. 2.0logCFU/package within 2h and remained relatively unchanged over the 120d. These data confirm that LAE provides an initial lethality towards L. monocytogenes and when used in combination with reduced levels/ratio of lactate and diacetate as an ingredient for frankfurters provides inhibition throughout shelf life.
authors.affiliation: US Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Microbial Food Safety Research Unit, Wyndmoor, PA 19038, USA. John.Luchansky@ars.usda.gov
authors.forename: A C S
authors.initials: AC
authors.lastname: Porto-Fett
authors.forename: S G
authors.initials: SG
authors.lastname: Campano
authors.forename: J L
authors.initials: JL
authors.lastname: Smith
authors.forename: A
authors.initials: A
authors.lastname: Oser
authors.forename: B
authors.initials: B
authors.lastname: Shoyer
authors.forename: J E
authors.initials: JE
authors.lastname: Call
authors.forename: J B
authors.initials: JB
authors.lastname: Luchansky
mesh_terms: D000085:Acetates / Q000494:pharmacology*; D000818:Animals; D001120:Arginine / Q000494:pharmacology*; D005519:Food Preservation; D005520:Food Preservatives / Q000494:pharmacology; D007773:Lactates / Q000494:pharmacology*; D007850:Lauric Acids / Q000494:pharmacology*; D008089:Listeria monocytogenes / Q000187:drug effects*; D008461:Meat Products / Q000032:analysis*
chemical_list: D000085:Acetates; D005520:Food Preservatives; D007773:Lactates; D007850:Lauric Acids; C548838:sodium diacetate; D001120:Arginine