Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Comparison of Irradiated Food with Electron Beam and Gamma-ray by PSL and TL Methods

광자극발광법과 열발광법 분석을 통한 전자선과 감마선 조사식품의 비교 연구

  • Kim, Kyu-Heon (New Hazardous Substances Team, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety) ;
  • Kwak, Ji-Young (New Hazardous Substances Team, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety) ;
  • Yoon, Jin-Ho (New Hazardous Substances Team, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety) ;
  • Park, Young-Eun (New Hazardous Substances Team, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety) ;
  • Lee, Jae-Hwang (New Hazardous Substances Team, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety) ;
  • Park, Yong-Chjun (Novel Food Division, Ministry of Food and Drug Safety) ;
  • Jo, Tae-Yong (Hazardous Substances Analysis Team, Busan Regional Food and Drug Administration) ;
  • Lee, Hwa-Jung (Food Additives and Packages Division, National Institute of Food and Drug Safety Evaluation) ;
  • Lee, Sang-Jae (New Hazardous Substances Team, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety) ;
  • Han, Sang-Bae (New Hazardous Substances Team, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety)
  • 김규헌 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 신종유해물질팀) ;
  • 곽지영 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 신종유해물질팀) ;
  • 윤진호 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 신종유해물질팀) ;
  • 박영은 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 신종유해물질팀) ;
  • 이재황 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 신종유해물질팀) ;
  • 박용춘 (식품의약품안전처 신소재식품과) ;
  • 조태용 (부산지방식품의약품안전청 유해물질분석팀) ;
  • 이화정 (식품의약품안전평가원 첨가물포장과) ;
  • 이상재 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 신종유해물질팀) ;
  • 한상배 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 신종유해물질팀)
  • Received : 2013.07.25
  • Accepted : 2013.09.02
  • Published : 2013.09.30
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Abstract

This study was conducted to determine the PSL and TL properties of foods irradiated with electron beam and gamma-ray. 5 kinds of food including cereal, pulse, fish powder, dried vegetable and tea were irradiated at 0 to 10 kGy by electron beam accelerator or $^{60}Co$ gamma-ray irradiator. The PSL analysis showed negative results for most of the non-irradiated samples. Non-irradiated shrimp powder showed intermediate result. Irradiated samples gave negative or intermediate or positive value which presented the limitation of PSL technique. In TL analysis, there were TL glow curves at around $300^{\circ}C$ with low intensity on non-irradiated samples. Maximum peak in the range of $150-250^{\circ}C$ was appeared on irradiated samples. TL ratio obtained by re-irradiation with 1 kGy was less than 0.1 on non-irradiated samples and higher than 0.1 on irradiated samples. Therefore, in PSL measurement, electron-beam irradiated samples could obtain more clear results. TL analysis showed obvious difference between non-irradiated and irradiated samples. But the identification was impossible for the sample of rice and lemon tea. Because of it's low contents of mineral.

곡류, 두류, 어패류분말, 건조채소류 및 다류 등 5가지 식품유형에 대하여 전자선과 감마선 0-10 kGy 조사 후 광자극발광법(PSL)과 열발광법(TL) 분석을 통해 적용 가능성을 확인하고 두 선종의 결과를 비교 분석 하였다. PSL 분석 결과, 새우분말을 제외한 비조사 검체는 700 이하의 PCs, 음성검체로 나타났다. 전자선과 감마선 조사된 곡류, 두류 및 다류는 양성검체뿐만 아니라 중간검체, 음성검체로도 확인되어 적용 가능성이 낮았다. 특히, 두류는 감마선보다 전자선 조사된 검체가 더 명확한 판별이 가능하였다. 전자선과 감마선 조사된 어패류분말과 건조채소류는 모두 양성검체로 나타나 조사선원에 관계없이 조사여부 확인이 가능하였다. TL 분석 결과 조사되지 않은 검체는 자연방사선에 의해 $300^{\circ}C$ 전후에서 낮은 peak를 가지는 글로우곡선이 나타났고, 대부분의 조사 검체에서는 $150-250^{\circ}C$의 부근에서 특유의 글로우곡선이 나타났다. 하지만, 쌀과 레몬홍차는 조사에 따른 특이적인 peak가 나타나지 않아 조사여부 확인이 어려웠다. 또한 TL 비를 산출해본 결과, 쌀과 레몬홍차를 제외한 대부분 비조사 검체는 0.0001-0.0728, 전자선과 감마선 조사된 검체는 0.1004-4.6748로 나타나 조사여부를 확인할 수 있었다. 쌀과 레몬홍차의 TL비는 0.1 이하로 나타나 글로우 1에서 확인한 것처럼 조사여부를 판단하기 어려웠다. 따라서 조사 선원에 따른 곡류와 두류의 PSL 측정 결과는 전자선 조사된 검체가 더 명확한 판별이 가능하였고, TL 측정 결과는 쌀과 레몬홍차를 제외하고 모든 검체에서 조사 선원에 관계없이 조사여부 판별이 가능하였다. 본 연구를 통해 전자선 조사에 따른 확인시험법 적용 가능성을 확인하고 선종에 따른 PSL 시험법에 대한 검지감도의 차이를 확인하였다. 연구결과는 전자선 추가 허용에 따른 데이터베이스 구축 및 조사식품 관리체계 마련에 기초자료로 활용될 계획이다.

Keywords

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