Korean Journal of Food Science and Technology (한국식품과학회지)
- Volume 33 Issue 4
- /
- Pages.423-426
- /
- 2001
- /
- 0367-6293(pISSN)
Detection of Gamma-Irradiated Dried Fruits by Measuring of Free Radicals
Free Radical의 측정을 통한 감마선 조사 건조과일의 검지
- Nam, Hye-Seon (Laboratory for Detection of Irradiated Foods, Korea Atomic Energy Research Institute) ;
- Ly, Sun-Yung (Department of Food and Nutrition, Chungnam National University) ;
- Yang, Jae-Seung (Laboratory for Detection of Irradiated Foods, Korea Atomic Energy Research Institute)
- Published : 2001.08.01
Abstract
Electron spin resonance (ESR) spectroscopy was used to investigate the effect of irradiation dose on irradiated dried fruits. Dried banana, pineapple and pistachio were irradiated with doses of 0, 0.5, 1, 2 and 5 kGy at room temperature using a Co-60 irradiator. Multiplet ESR signals were observed in irradiated dried banana and pineapple, and singlet ESR signal was observed in irradiated pistachio, while these characteristic signals were not detected in non-irradiated samples. Since the amount of free radicals linearly increased with the applied doses
건조과일의 방사선 조사여부를 확인하기 위하여 감마선 조사로 생성된 라디칼을 ESR spectroscopy를 이용하여 측정하였다. 건조된 바나나, 파인애플 및 피스타치오를 0, 0.5, 1, 2, 5 kGy의 Co-60 감마선을 조사한 후 이를 시료로 Bruker Win-EPR spectrometer를 이용하여 측정하였다. 방사선 조사된 파인애플과 바나나는 sugar radical의 전형적인 매우 복잡한 multiplet을 나타내었으며, 피스타치오의 신호형태는 singlet을 나타내어 비조사 시료와 확실히 구별되었다. 적용선량의 범위에서