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.

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

• 김규헌(식품의약품안전청 식품의약품안전평가원 식품감시과학팀, Scientific Food Investigation Team, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Administration) | Kyu-Heon Kim Correspondence to
• 최은진(서울지방식품의약품안전청 유해물질분석과, Hazardous Substances Analysis Division, Seoul Regional Korea Food & Drug Administration) | Eun-Jin Choi
• 장호원(부산지방식품의약품안전청 유해물질분석과, Hazardous Substances Analysis Division, Busan Regional Korea Food & Drug Administration) | Ho-Won Chang
• 신춘식(경인지방식품의약품안전청 수입식품분석과, Imported Food Analysis Division, Gyeongin Regional Korea Food & Drug Administration) | Choon Shik Shin
• 김문영(식품의약품안전청 식품의약품안전평가원 식품감시과학팀, Scientific Food Investigation Team, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Administration) | Moon Young Kim
• 황초롱(식품의약품안전청 식품의약품안전평가원 식품감시과학팀, Scientific Food Investigation Team, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Administration) | Cho-Rong Hwang
• 김은정(식품의약품안전청 수입식품과, Food Import Division, Korea Food & Drug Administration) | Eun Jeong Kim
• 조태용(식품의약품안전청 식품의약품안전평가원 식품감시과학팀, Scientific Food Investigation Team, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Administration) | Tae-Yong Jo
• 박건상(식품의약품안전청 식품의약품안전평가원 미생물과, Food Microbiology Division, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Administration) | Geon-Sang Park
• 강명희(서울지방식품의약품안전청 유해물질분석과, Hazardous Substances Analysis Division, Seoul Regional Korea Food & Drug Administration) | Myung-Hee Kang
• 김재이(부산지방식품의약품안전청 유해물질분석과, Hazardous Substances Analysis Division, Busan Regional Korea Food & Drug Administration) | Jae-I Kim
• 김진숙(경인지방식품의약품안전청 유해물질분석과, Hazardous Substances Analysis Division, Gyeongin Regional Korea Food & Drug Administration) | Jin-Sook Kim
• 박순희(서울지방식품의약품안전청 유해물질분석과, Hazardous Substances Analysis Division, Seoul Regional Korea Food & Drug Administration) | Sue-Nie Park
• 성락선(부산지방식품의약품안전청 유해물질분석과, Hazardous Substances Analysis Division, Busan Regional Korea Food & Drug Administration) | Rack Seon Seong
• 장영미(경인지방식품의약품안전청 수입식품분석과, Imported Food Analysis Division, Gyeongin Regional Korea Food & Drug Administration) | Young-Mi Jang
• 윤혜성(식품의약품안전청 식품의약품안전평가원 식품감시과학팀, Scientific Food Investigation Team, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Administration) | Hae-Sung Yoon
• 한상배(식품의약품안전청 식품의약품안전평가원 식품감시과학팀, Scientific Food Investigation Team, National Institute of Food & Drug Safety Evaluation, Korea Food & Drug Administration) | Sang-Bae Han