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KMID : 0380620130450010008
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Korean Journal of Food Science and Technology
2013 Volume.45 No. 1 p.8 ~ p.12
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Luminescence Detection Characteristics for Irradiated Dried Fishes Using PSL-TL System
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Kim Moon-Young
Kim Kui-Ran
Ahn Jae-Jun
Kim Eun-Jung
Lee Kyung-Jin
Park Kun-Sang
Kwon Joong-Ho
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Abstract
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Abstract Photostimulated luminescence (PSL) and thermoluminescence (TL) analyses were conducted for the detection
of different irradiated dried fishes. All the non-irradiated samples provided PSL counts of lower than 700 (negative: T1).
Clear identification of irradiated sample was only possible for irradiated anchovy with PSL counts >5000; however, the
results were unsatisfactory (not positive) for irradiated cod, dried filefish, hairtail, and herring samples. The contaminating
silicate minerals were obtained by density separation or acid hydrolysis to perform TL analysis, which resulted in a low
intensity of TL glow curve with a maximum peak after 250oC for the non-irradiated samples that are irrespective of their
kinds and methods for the mineral separation. The TL glow curves of high intensity with maximum peak in the
temperature range of 150-250oC were observed for all the irradiated samples. However, better results of TL glow curves
and particularly of the TL ratio (TL1/TL2) were obtained when the minerals were separated by a acid hydrolysis method.
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KEYWORD
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dried fish, irradiation, detection, luminescence, acid hydrolysis
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