Research Topics
| R C WhitingSummaryAffiliation: Food and Drug Administration Country: USA Publications
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Detail Information
Publications
Modeling the lag phase of Listeria monocytogenesR C Whiting
Microbial Food Safety Research Unit, Agricultural Research Service, US Department of Agriculture, Wyndmoor, PA 19038, USA
Int J Food Microbiol 73:291-5. 2002..Transitions of 0.75 or 1.0 h had 20-h lag phases, essentially that of immediate transitions. When the transition was 1.5 h, an intermediate pattern of less than 1 log of growth followed by no additional growth for 20 h occurred...
Food-borne Listeria monocytogenes risk assessmentA D Hitchins
Food and Drug Administration Center for Food Safety and Applied Nutrition, Washington, DC, USA
Food Addit Contam 18:1108-17. 2001..These decisions are the responsibility of risk managers who consider additional factors such as food preferences, technical feasibility and societal values when evaluating regulatory policies...
Variation among Escherichia coli O157:H7 strains relative to their growth, survival, thermal inactivation, and toxin production in brothR C Whiting
Microbial Food Safety Research Unit, Agricultural Research Service, US Department of Agriculture Wyndmoor, PA 19038, USA
Int J Food Microbiol 75:127-33. 2002..This variation among strains is applicable whether predictions are made by traditional subjective and point estimates or by using models and risk assessments...
Survival and growth of Listeria monocytogenes in broth as a function of temperature, pH, and potassium lactate and sodium diacetate concentrationsK A Abou Zeid
Center for Food Science and Technology and, U S Department of Agriculture, Agricultural Research Service, University of Maryland Eastern Shore, Princess Anne, Maryland 21853, USA
J Food Prot 70:2620-5. 2007..These results suggest that 1.8% of lactate-diacetate mixture can be used as a substantial hurdle to the growth of L. monocytogenes when refrigerated temperatures are maintained for products with pH less than 6.5...
Inactivation of microorganisms with microwaves at reduced temperaturesM F Kozempel
U S Department of Agriculture, Eastern Regional Research Center, Wyndmoor, Pennsylvania 19038, USA
J Food Prot 61:582-5. 1998..There was a slight decrease in microorganisms in tomato juice, pineapple juice, apple cider, and beer; and no effect in skim milk...
Effects of pH and agitation on the growth of Listeria monocytogenes Scott A in brain heart infusion broth containing combined potassium lactate and sodium diacetate during storage at 4 or 10 degrees CK S Yoon
Department of Human Ecology, University of Maryland Eastern Shore, Princes Anne, Maryland 21853, USA
J Food Prot 66:1469-73. 2003..A similar but less obvious trend was observed for broths stored at 10 degrees C. These results indicate that lactate-diacetate combinations effectively acted with low pH and temperature to inhibit the growth of L. monocytogenes Scott A...
Control of growth and survival of Listeria monocytogenes on smoked salmon by combined potassium lactate and sodium diacetate and freezing stress during refrigeration and frozen storageK S Yoon
Center for Food Science and Technology, University of Maryland Eastern Shore, Princess Anne, Maryland 21853, USA
J Food Prot 67:2465-71. 2004..However, the effect of freezing stress was more significant at 4 degrees C than at 10 degrees C, indicating the importance of temperature control of smoked salmon during the retail storage period...
Determining the microbiological criteria for lot rejection from the performance objective or food safety objectiveR C Whiting
Center for Food Safety and Applied Nutrition, Food and Drug Administration, College Park, MD 20740, USA
Int J Food Microbiol 110:263-7. 2006..Sampling, sample preparation and analytical procedures that reduce the variation between the samples will affect the choice of m value and maximum lot mean that meets the MC...
