Project Number: 1935-42000-057-12
Project Type: Specific Cooperative Agreement

Start Date: Sep 30, 2005
End Date: Apr 30, 2008

Objective:
The objectives of this project are: 1)quantify the degree fo L. monocytogenes transfer during deli slicing of cured ham based on slicer blade composition, blade surface roughness, product temperature and product composition, 2)characterize the prevalence and levels of L. monocytogenes in deli-sliced meats and the likelihood and mechanism of cross-contamination occurring during deli slicing due to specific food service handling behaviors, 3)develop a compartmental mechanistic mathematical risk model of L. monocytogenes associated with the deli slicing process, including cross-contamination, 4)use the model to identify candidate risk mitigation strategies, and 5)develop educational and outreach strategies, including the development of specific risk communication messages, targeting deli slicing machine operators to reduce the risk of contamination and growth of L. monocytogenes.

Approach:
The proposed work will involve cooperative research between the MFS and Michigan State University (MSU). Using a combination of laboratory-based studies, mathematical modeling, and communication/education programs, specific data gaps will be filled for the likelihood of L. monocytogenes contamination during the slicing of ready-to-eat meats. These data will be used to revise an existing L. monocytogenes risk assessment targeted at the retail/home handling phase of the farm-to-fork continuum. Subsequent sensitivity and what-if scenario analysis will identify critical variables impacting risk. In response to these findings, risk communication and education strategies/guidelines for consumers and deli workers will be developed.