Control of Listeria monocytogenes on Frankfurters and Cooked Pork Chops by Irradiation Combined with Modified Atmosphere Packaging
Source: Journal of Food Protection®, Number 6, June 2012, pp. 1104-1175 , pp. 1063-1070(8)
Abstract:This study was conducted to investigate the efficacy of controlling Listeria monocytogenes on frankfurters and cooked pork chops with irradiation and modified atmosphere packaging (MAP) containing a high concentration of CO2. Frankfurters and cooked pork chops were inoculated with a five-strain cocktail of L. monocytogenes and packaged in vacuum or high-CO2 MAP. Irradiation was applied to each product at 0, 0.5, 1.0, or 1.5 kGy. No significant packaging effect was found for the radiation sensitivity of L. monocytogenes. Radiation D 10-values for L. monocytogenes were 0.66 ± 0.03 and 0.70 ± 0.05 kGy on frankfurters and 0.60 ± 0.02 and 0.57 ± 0.02 kGy on cooked pork chops in vacuum and high-CO2 MAP, respectively. High-CO2 MAP was more effective than vacuum packaging for controlling the growth of survivors during refrigerated storage. These results indicate that irradiation and high-CO2 MAP can be used to improve control of L. monocytogenes in ready-to-eat meats.
Document Type: Research Article
Affiliations: 1: Johnsonville Sausage, LLC, N6927 Johnsonville Way, Sheboygan Falls, Wisconsin 53085, USA 2: Department of Animal Science, Iowa State University, Ames, Iowa 50011, USA; Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa 50011, USA. firstname.lastname@example.org 3: Department of Animal Science, Iowa State University, Ames, Iowa 50011, USA; Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa 50011, USA 4: Department of Animal Science, Iowa State University, Ames, Iowa 50011, USA 5: Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa 50011, USA 6: Pfizer, Inc., 2248 Darbytown Road, Richmond, Virginia 23231, USA
Publication date: 2012-06-01
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