Photostimulated luminescence (PSL)-Thermoluminescence (TL) combined analysis was applied to detect whether composite seasoning products and spices were irradiated or not. Samples were irradiated with 60Co at 0~7 kGy. A total of 12 different samples (6 of composite seasoning products and 6 of spices) was examined. Depending on the PSL results, TL analysis was performed. In case of both PSL positive ( ≥ 5,000 counts) and intermediate (700~5000 counts), TL analysis had to be performed to confirm the result of PSL. Using TL, the shape of the glow curve (Glow 1) made it possible to identify the irradiated samples. In addition, The TL glow ratio (Glow 1/Glow 2) obtained by normalization was less than 0.1 for the non-irradiated samples and ≥ 0.29 for irradiated ones, respectively.

미생물적 품질개선이 요구되는 복합조미식품 2종(beef broth 분말, pork bone extract 분말)을 대상으로 의 감마선을 조사하고 광자극 발광(PSL), 전자스핀공명(ESR) 및 열발광(TL) 측정에 의한 조사여부검지 가능성을 분석하였다. 조사선량에 따른 PSL photon count를 측정해 본 결과, 비조사 beef broth와 pork bone 분말은 각각 503.0과 429.5의 값을 보여 비조사 시료에서 측정되는 700이하