광자극발광법, 열발광법 및 전자스핀공명법을 이용한 국내 방사선 조사 허용 외 식품에 대한 검지법 적용 연구

서지정보

ㆍ발행기관 : 한국식품위생안전성학회 ㆍ수록지정보 : 한국식품위생안전성학회지 / 27권 / 3호
ㆍ저자명 : 김규헌, 최은진, 장호원, 신춘식, 김문영, 황초롱, 김은정, 조태용, 박건상, 강명희, 김재이, 김진숙, 박순희, 성락선, 장영미, 윤혜성, 한상배

목차

ABSTRACT
재료 및 방법
시료
방사선 조사
광자극발광법(Photostimulated luminescence, PSL) 측정
열발광법(Thermoluminescence, TL) 측정
전자스핀공명법(Electron Spin Resonance, ESR) 측정
결 과
시료의 PSL 특성
시료의 TL 특성
시료의 ESR 특성
고 찰
감사의 말
요 약
참고문헌

영어 초록

In this study, we investigated the applicability of the photostimulated luminescence(PSL), thermoluminescence( TL) and electron spin resonance(ESR) methods for various foods which are not allowed to be irradiated in Korea. All 15 foods including sesame, almond, peanut, cocoa powder etc. were analyzed. Samples were irradiated at 1~10 kGy using a 60Co gamma-ray irradiator. In PSL study, the photon counts of all the unirradiated samples showed negative(lower than 700). The photon counts irradiated(1 kGy) dried shrimp, roasted peanut and seasoned peanut showed positive(higher than 5,000) and the other samples were negative or intermediate(> 700 and < 5,000). In TL analysis, results showed that it is possible to apply TL method to all foods containing minerals. In ESR measurements, the ESR signal(single-line) intensity of irradiated foods was higher than non-irradiated foods. In particular, the specific ESR signals of irradiation-induced crystalline sugar, cellulose and bone radical were detected in dried plum, raisin, dried cherry, mango(dried, frozen), rambutan, cocoa(powder), cinnamon, parsley, carrot, broccoli, dried arrow squid, dried pollack and dried shrimp. According to the results, PSL, TL and ESR methods were successfully applied to detect the irradiated foods because TL method is not able to detect the irradiated foods rarely composed of minerals. ESR is also a difficult method to detect the changes of ESR signal patterns of food. It is concluded that TL analysis or ESR assay is suitable for detection of irradiated samples and a combined method is recommendable for enhancing the reliability of detection results.

참고 자료

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