Scientia Agricultura Sinica ›› 2011, Vol. 44 ›› Issue (8): 1688-1693 .doi: 10.3864/j.issn.0578-1752.2011.08.018

• STORAGE·FRESH-KEEPING·PROCESSING • Previous Articles     Next Articles

Identification and Estimation of the Initial Absorbed Dose in Irradiated Cumin by ESR Spectrometry

  

  1. 1. 中国农业科学院农产品加工研究所
    2. 中国农业科学院农产品加工研究所；农业部辐照产品质量监督检验测试中心
    3. 中国计量科学研究院
  • Received:2010-10-12 Revised:2010-12-14 Online:2011-04-15 Published:2011-04-15
  • Contact: Wei-Ming

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Abstract: 【OBJECTIVE】The objective of this study is to detect whether or not the cumin has been irradiated and estimate the initial absorbed dose of cumin;【METHOD】The cumin was studied as experimental material to investigate the feature changes of ESR spectrum and the relationship between ESR intensity and irradiation dose in the range of 0 to 15.0 kGy and the initial absorbed dose of cumin was assessed by using the dose-additive method;【RESULTS】The ESR signal intensity of irradiated cumin increased with the increasing of the absorbed dose and even after 220 days ESR method could also be used to identify whether or not the cumin has been irradiated. The dose additive method can be used for a reliable evaluation of the absorbed dose in cumin and the deviation between the initial dose and the dose estimated by using 3rd degree polynomial function at different storage times (10, 20 and 30 days) after initial irradiation is all less than 1 kGy, the estimated doses of samples using the 3rd polynomial function are more close to the actual doses than using the exponential function.;【CONCLUSION】The ESR technique could be used as a qualitative and quantitative method to indentify irradiated cumin.

Key words: Irradiation, Electron spin resonance, Storage, Dose-additive method, Signal intensity

CLC Number: 

  • TL75+1
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