Application of ESR spectroscopy to identify and estimate original dose in irradiated cumin and white pepper
文献类型: 外文期刊
第一作者: Ha, Yi Ming
作者: Ha, Yi Ming;Li, Wei Ming;Wang, Feng
作者机构:
关键词: Irradiation;Electron spin resonance;Storage;Dose-additive method;Signal intensity
期刊名称:EUROPEAN FOOD RESEARCH AND TECHNOLOGY ( 影响因子:2.998; 五年影响因子:3.005 )
ISSN: 1438-2377
年卷期: 2011 年 233 卷 4 期
页码:
收录情况: SCI
摘要: Feature changes in the ESR spectrum and the relationship between ESR intensity and irradiation dose ranging between 0 and 15.0 kGy were studied to detect irradiated cumin and white pepper by ESR spectroscopy. The absorbed irradiation doses of two samples were assessed using the dose-additive method. The ESR signal intensities of irradiated cumin and white pepper increased with increasing absorbed radiation dose. Even after 220 days, the ESR method could still be used to identify whether or not cumin and white pepper had been irradiated. The dose-additive method can be used to reliably evaluate the absorbed doses of cumin and white pepper. The 3rd polynomial function can be used to fit the data. Long-term decay of the radiation-induced radical has a marked influence on dose assessment and leads to an underestimation of the dose.
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