CAST papers are the foundation of CAST’s science communication work. Developed by expert-led task forces, these peer-reviewed publications translate agricultural science into trusted insights that inform policy, guide public understanding, and fuel CAST programs, dialogues, and educational initiatives.

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Ionizing Energy in Food Processing and Pest Control: I. Wholesomeness of Food Treated With Ionizing Energy

Task Force Chairs
Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture
Department of Applied Biological Sciences, Massachusetts Institute of Technology
Authors
Science and Advanced Technology Laboratory, U.S. Army Natick Research, Development and Engineering Center
Department of Pharmacology, Thomas Jefferson University
Department of Food Science and Technology, University of Nebraska
U.S. Army Natick Research, Development and Engineering Center
U.S. Army Natick Research, Development and Engineering Center
Abstract
This report evaluates the wholesomeness of foods treated with ionizing energy when used for food processing and pest control. It reviews the physical nature of ionizing radiation, sources of natural and induced radiation exposure, and the mechanisms by which ionizing energy interacts with food components and microorganisms. The assessment examines toxicological safety, microbiological safety, and nutritional quality of irradiated foods, including the formation and significance of radiolytic products. Evidence from animal feeding studies, human consumption data, and government and international evaluations is reviewed to determine whether irradiation introduces health risks or compromises food quality. The report also considers irradiation in comparison with conventional food processing and preservation methods, as well as its effectiveness in controlling foodborne pathogens and insect pests. Based on the available scientific data and regulatory reviews at the time of publication, the task force concludes that foods irradiated under approved conditions are wholesome and safe for human consumption and that ionizing energy is a viable and effective food processing technology when properly applied.
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Reviewers
The Consumer Network
Department of Food Science and Technology, University of Nebraska
Agricultural Research Service, U.S. Department of Agriculture
Crops Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Utah State University
Department of Pomology, University of California, Davis
Horticultural Crops Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture
Department of Rural Sociology, Texas A&M University
Richard B. Russell Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture
Department of Sociology, University of Kentucky
National Bureau of Standards
CH2M Hill
Department of Biological Sciences, North Texas State University
Stored-Product Insects Research and Development Laboratory, Agricultural Research Service, U.S. Department of Agriculture
Department of Food Science and Human Nutrition, Michigan State University
Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture
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