Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Detection Characteristics of Irradiated Dried Vegetables by Analyzing Photostimulated Luminescence (PSL) and Thermoluminescence (TL)

물리적 방법(PSL, TL)을 이용한 방사선 조사 건조 채소류의 검지

  • Kim Mi-Yeung (Department of Food Science & Technology, Kyungpook National University) ;
  • Kim Byeong-Keun (Department of Food Science & Technology, Kyungpook National University) ;
  • Kim Kyo-Youn (Department of Food Science & Technology, Kyungpook National University) ;
  • Bhatti Ijaz A. (Department of Food Science & Technology, Kyungpook National University) ;
  • Kwon Joong-Ho (Department of Food Science & Technology, Kyungpook National University)
  • 김미영 (경북대학교 식품공학과) ;
  • 김병근 (경북대학교 식품공학과) ;
  • 김교연 (경북대학교 식품공학과) ;
  • ;
  • 권중호 (경북대학교 식품공학과)
  • Published : 2006.04.01
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Abstract

Photostimulated luminescence (PSI) and thermoluminescence (TL) were analyzed for dried vegetables irradiated at 0, 1, 4 and 7 kGy, such as dried oak mushroom, spinach, radish leaves, water cress, radish, and pumpkin, to detect irradiation treatment. PSL results that photon counts for non-irradiated samples were lower than 700 that corresponds to negative, while those of irradiated samples over 1 kGy showed positive photon counts$(\geq5000)$, indicating irradiation treatment Meantime, TL ratio by normalization was lower than 0.021 in threshold value for non-irradiated samples and more than 0.653 for irradiated samples, and therefore it was possible to detect whether the 6 kinds of dried vegetables were irradiated or not by analyzing PSL and TL.

각종 가공식품 원료로 사용되고 있는 건조 채소류 중 표고버섯, 시금치, 무청, 미나리, 무, 호박 등 6종에 대하여 1, 4, 7 kGy의 선량으로 감마선을 조사하고, photostimulated luminescence kGy와 thermoluminescence (TL) 등 물리적 분석방법을 이용하여 감마선 조사 여부를 확인하였다. PSL 측정에서 비조사 표고버섯, 시금치, 무청, 미나리, 무 및 호박에서는 각각 $194.0{\pm}223.4,\;695.5{\pm}26.2,\;598.0{\pm}4.2,\;266.5{\pm}9.2,\;503.0{\pm}190.9$ 및 $270.5{\pm}245.4$ 수준의 photon count가 측정되어 비조사 시료의 범위(700 이하의 값)에 속하였으며, 1 kGy 이상 조사군에서는 모두 방사선 조사시료의 범위인 5000 이상의 photon count를 나타내었다. 또한 6종의 시료에 대해 TL분석을 실시한 결과, 비조사군의 TL ratio$(TL_1/TL_2)$는 0.021 이하를, 1 kGy 이상 조사군에서는 0.653 이상으로 나타나 본 연구에 사용된 6종의 건조 채소류는 PSL과 TL분석에 의해 조사여부의 검지가 가능한 것으로 확인되었다.

Keywords

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