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Detection Characteristics of Irradiated Aloe vera by the Analysis of PSL, TL and ESR  

Kim Byeong-Keun (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute)
Lim Sang-Yong (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute)
Song Hyun-Pa (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute)
Yun Hye-Jeong (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute)
Kwon Joong-Ho (Department of Food Science & Technology, Kyungpook National University)
Kim Dong-Ho (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute)
Publication Information
Food Science and Preservation / v.13, no.1, 2006 , pp. 61-65 More about this Journal
Abstract
Photostimulated luminescence (PSL), thermoluminescence(TL) and electron spin resonance (ESR) analyses were conducted to detect irradiation treatment of aloe vera powder, which was gamma-irradiated at 1, 3, 5 and 7 kGy. The non-irradiated aloe vera powder indicated below 700 of photon count in PSL, whereas, irradiated at 1 kGy and more, it showed more than 5,000 photon counts, indicating that it is feasible to detect the irradiation of aloe vera powder through PSL In the result of TL, from the minerals of the samples that were irradiated at more than 1 kGy, TL glow curve was able to be seen at around $150^{\circ}C$. As the quantity of irradiation goes up, the ratio of $TL_1\;and\;TL_2$ also increased in proportion to that of irradiation. In the result of ESR analysis, unspecific centeral ESR signal was could be seen. As the amount of irradiation on the samples increased to the level of $R^2=0.97$, the signal intensity also rose similarly. In conclusion, the PSL, TL and ESR exhibited the typical signals induced by irradiation treatment and were able to successfully detect all of the irradiated aloe vera powder. In addition, we found a positive correlation between the intensity of ESR and TL signals and irradiation doses.
Keywords
aloe vera powder; detection; PSL; TL; ESR;
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