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United States Department of Agriculture

Agricultural Research Service


Location: Food Safety and Intervention Technologies Research

Title: Contamination and changes of food factors during processing with modeling applications-safety related issues

item Sheen, Shiowshuh

Submitted to: International Conference on Food Factors
Publication Type: Proceedings
Publication Acceptance Date: 1/16/2012
Publication Date: 5/4/2012
Citation: Sheen, S. 2012. Contamination and changes of food factors during processing with modeling applications-safety related issues. Proceedings of International Conference on Food Factors. 20(1):411-414.

Interpretive Summary:

Technical Abstract: Chemical and microbiological contamination of food during processing and preservation can result in foodborne illness outbreaks and food poisoning. Chemical contaminations can occur through exposure of foods to illegal additives, pesticides and fertilizer residues, toxic compounds formed by microbes, and are easier to control than illnesses caused by microorganisms. In general, chemical reactions in food can be described using first-order kinetic models. Food quality factors related to nutrition, color, texture, etc. are typically affected by temperature, pH, moisture content, as well as microbial growth. However, modeling the growth and inactivation of microorganisms is much more difficult and complex than that for chemical reactions. If harmful microbes are not eliminated during processing, their survival and growth may cause spoilage and foodborne illness. Food safety intervention technologies such as microwave heating, and modified packaging will be discussed, as well as issues related to cross-contamination of foods during processing. Microbial food safety can be enhanced by the development of growth and inactivation modeling tools, world-wide data sharing, and collaboration in which the Pathogen Modeling Program (PMP) and Combase can be utilized.

Last Modified: 10/16/2017
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