A preliminary approach to identify irradiated foods by thermoluminescence measurements

Thermoluminescence (TL) is one of the physical methods for the identification of irradiated foods. Among the currently developed methods, TL is the most widely used method for the identification of irradiated foods. However, in order to use this method, silicate minerals should be isolated from food...

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Bibliographic Details
Published in:Journal of luminescence 2012-07, Vol.132 (7), p.1619-1622
Main Authors: Shin, Choonshik, Kim, Hyoung-Ook, Lim, Yoongho
Format: Article
Language:English
Subjects:
Biological and medical sciences
Food industries
Foods
Fundamental and applied biological sciences. Psychology
General aspects
Glow curves
Iron-containing minerals
Irradiated foods
Irradiation
Luminescence
Methods of analysis, processing and quality control, regulation, standards
Minerals
Silicate minerals
Silicates
Spices
Thermoluminescence
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Summary:Thermoluminescence (TL) is one of the physical methods for the identification of irradiated foods. Among the currently developed methods, TL is the most widely used method for the identification of irradiated foods. However, in order to use this method, silicate minerals should be isolated from food samples. The process for the isolation of silicate minerals is time consuming and laborious. In this work, we have investigated the applicability of the TL method using iron-containing minerals instead of silicate minerals. In the TL analyses of dried spices, TL glow curves of iron-containing minerals showed maximum temperatures between 150 and 250°C which were the same as those of silicate minerals. The process for the mineral separation of the proposed method is simple, fast, easy, and reliable. Moreover, the analysis results including TL ratio have not shown significant differences compared with the silicate minerals method. As a result, the TL measurements using the iron-containing minerals could be an excellent method for the identification of the irradiated foods, including dried spices. ► A thermoluminescence method using iron-containing minerals is proposed. ► Current method using silicate minerals is time consuming and laborious. ► However, the proposed method is simple, fast, easy, and reliable. ► Analysis results are similar to those of the silicate minerals method.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2012.02.004