• Journal of the Korean Society of Food Science and Nutrition
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• v.32 no.1
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• pp.8-14
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• 2003

Multistep detection was peformed to identify irradiated dried anchovy. In thermoluminescence (TL) analysis, non-irradiated samples represented a lower peak at about 28$0^{\circ}C$, but irradiated samples showed a higher peak at around 20$0^{\circ}C$. The normalization with a re-irradiation step at 1 kGy could verify the identification results. Electron spin resonance (ESR) spectroscopy for bones separated from irradiated anchovy revealed specific signals (g=2.002,1.998) derived from a hydroxyapatite radical, which intensities were in proportion to the irradiation doses and still detectable even after 6 months of storage at -2$0^{\circ}C$. Six kinds of hydrocarbons (HC) were observed in dried anchovy samples and 1,7-hexadecadiene and 1-hexadecene were only detected in irradiated anchovy at 1 kGy or more. Also among 3 kinds of radiation-induced 2-alkylcyclobutanones (2-ACB) observed, 2-dodecylcy-clobutanone and 2-tetradecylcyclobutanone were unique in irradiated anchovy. As a result, the concentration of radiation-induced HCs and 2-ACBs were dependent on the irradiation dose and detectable after 6 months of storage. However, TL and ESR analyses were found simpler than the other methods for identification of irradiated boiled-dried anchovy.

• Safe Food
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• v.8 no.3
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• pp.22-29
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• 2013

• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.1
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• pp.158-163
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• 2004

We investigated the usefulness of 2-alkylcyclobutanones as markers for irradiated eggs and egg products by comparing 2-alkylcyclobutanone concentrations in irradiated raw egg yolk, boiled egg yolk, and egg yolk powder. One method of detection radiation-induced 2-alkylcyclobutanones involves extraction fat from irradiated egg samples separating 2-alkylcyclobutanones by florisil column chromatography, and identifying GC/MS. 2-(5'-Tetradecenyl)cyclobutanone of 2-alkylcyclobutanones was high relatively in boiled egg yolk, but 2-dodecylcyclobutanone was high in raw egg yolk and egg yolk Powder. Concentrations of the radiation-induced 2-alkylcyclobutanones increased linearly with the irradiation dose. The radiation-induced 2-alkylcyclobutanones from egg samples at 0.5 kGy over and not detected at the non-irradiated samples. Therefore, these compounds could be used as marker of Post-irradiation for egg Products.