Screening of irradiated food using ESR measurement of paper
2005
Goto, M.(Tokyo-to. Industrial Technology Research Inst. (Japan)) | Yamazaki, M.
As paper has high content of cellulose, sensibility of ESR measurements of paper should be high. We examined stability of ESR signals in irradiated recycled copying paper, and estimated the possibility to utilize ESR measurement of paper for the detection of irradiated food. Cellulose radicals in paper irradiated at 1kGy and stored at 40 deg C in water was detected for 20 days. Cellulose radicals in irradiated paper stored at 90 deg C in water were more stable than that stored in air. ESR measurements of 50mg paper are simple and easy, so ESR measurement of rapping paper or corrugated box is good screening method for the detection of irradiated food.
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