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Estimation of the absorbed dose in radiation-processed food—1. Test of the EPR response function by a linear regression analysis

✍ Scribed by M.F. Desrosiers; G.L. Wilson; C.R. Hunter; D.R. Hutton

Publisher
Elsevier Science
Year
1991
Weight
374 KB
Volume
42
Category
Article
ISSN
0883-2889

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✦ Synopsis

Free radicals produced in chicken bone tissue by 137Cs gamma-rays were measured using electron paramagnetic resonance spectroscopy. The yield of radicals was found to be proportional to the absorbed dose. Additive re-irradiation of previously irradiated bones is the basis of a method to estimate the absorbed dose in radiation-processed foods. The ability of the method to provide accurate dose assessments for a range of doses (0.5-7.4 kGy) is tested here. A linear fit to the data yields reasonable dose estimates for bone irradiated less than 2 kGy, but fails at the higher doses using a linear approximation to the dose response. These data and their implications are discussed.

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