earticle

영어

Three physical methods, photostimulated luminescence (PSL), thermoluminescence (TL), and electron spinresonance (ESR), have been applied to detect the irradiation treatment for the non- and steamed sesame seed samples. PSLsuccessfully screened the irradiated samples from the non-irradiated control by comparing their photon counts (PCs) with thelower (less than 700 count/60 sec) and upper threshold values (higher than 5,000 count/60 sec). TL signals were still detectedin 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 weredetected in all the irradiated samples irrespective of steaming treatment. Identification of the irradiated sesame seeds waspossible even after steaming by analyzing PSL, TL, and ESR.