Thermal Destruction of Escherichia coli O157:H7 in Hamburger
Source: Journal of Food Protection®, Number 10, October 1997, pp. 1158-1286 , pp. 1163-1166(4)
Abstract:The inactivation of E. coli O157:H7 in ground beef patties cooked in a skillet was investigated. Ground beef patties inoculated with a mixture of five strains of E. coli O157:H7 were cooked in a Farberware skillet set at a temperature of 275°F (137°C). Eight type K thermocouples connected to a data logger were used to record the temperatures at eight points within the patty. The cooking times studied ranged from 2.25 min to 4 min. Tryptic soy agar plates overlaid with sorbitol MacConkey agar were used for recovery of E. coli O157:H7. Heating of ground beef patties to an internal temperature endpoint of 155°F (68.3°C) resulted in 4-log cycle reductions of the organism. The results of this investigation conducted under conditions simulating those that occur in the retail food industry provide a basis for ensuring safety against E. coli O157:H7 in ground beef patties.
Document Type: Research Article
Affiliations: 1: U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA 2: Hospitality Institute of Technology and Management, 830 Transfer Road Suite 35, St. Paul, Minnesota 55114, USA
Publication date: October 1, 1997
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