Written Paper

Properties of PSL, TL, and ESR to Identify the Irradiated Sesame Seeds after Steaming  [2009]

Lee, J.E., Kyungpook National University, Daegu, Republic of Korea Kausar, Tusneem, University of Sargodha, Pakistan Chung, H.W., Korea Food and Drug Administration, Seoul, Republic of Korea Jeong, I.Y., Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Republic of Korea et al.

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Three physical methods, photostimulated (PSL), thermoluminescence (TL), and electron spin resonance (ESR), have been applied to detect the irradiation treatment for the non- and steamed sesame seed samples. PSL successfully, screened the irradiated samples from the non-irradiated control by comparing their photon counts (PCs) With the lower (less than 700 count/60 see) and upper threshold values (higher than 5,000 count/60 see). TL signals were still detected in all irradiated samples even after steaming, which was reconfirmed with TL ratios [integrated area of TL₁ (the first glow)/TL₂ (the second glow)] through re-irradiation step. ESR spectrometry showed that radiation-induced cellulose radicals were detected in all the irradiated samples irrespective of steaming treatment. Identification of the irradiated sesame seeds was possible even after steaming by analyzing PSL, TL, and ESR.

From the journal

Food Science and Biotechnology

ISSN : 1226-7708