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Detection of Irradiated Korean Wheat Flour by Viscosity and Pulsed Photostimulated Luminescence (PPSL) Methods

Yi, Sang-Duk    (Nonghyup Korea Insam Research Institute, Nonghyup Koreainsam Co., LTD.   ); Chang, Kyu-Seob    (Department of Food Science and Technology, Chungnam National University   ); Oh, Man-Jin    (Department of Food Science and Technology, Chungnam National University  );
  • 초록

    This study was carried out to establish methods for irradiation detection of irradiation in Korean wheat flour by pulsed photostimulated luminescence (PPSL) and viscometric methods. The photon counts of the irradiated Korean wheat flour measured by PPSL immediately after irradiation increased with increasing irradiation dose. The photon counts in the irradiated Korean wheat flour almost disappeared with lapse of time after storage in normal room conditions, but irradiation detection was still possible after 6 months in darkroom conditions. All irradiated samples indicated a decrease in viscosity with increasing stirring speeds (rpm) and irradiation doses. Irradiation at 1 kGy significantly decreased the viscosity. Consequently, these results suggest that the detection of irradiated Korean wheat powder is possible by both viscometric and PPSL methods.


  • 주제어

    detection methods .   viscosity .   PPSL .   gamma irradiation .   Korean wheat.  

  • 참고문헌 (26)

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    1. 1976 "유연포장재료(柔軟包裝材料)를 이용(利用)한 고추 포장(包裝)에 관(關)한 연구(硏究)" 한국농화학회지 = Journal of the Korean society of Agricultural Chemistry and Biotechnology 19 (3): 145~154    
    2. 1976 "Caramel 색소(色素)의 원료대체(原料代替)에 관(關)한 연구(硏究) - 당액(糖液) 및 촉매(觸媒)의 종류(種類)가 Caramel의 성상(性狀)에 미치는 영향(影響) -" 農業技術硏究報告 = Research reports of agricultural science and technology 3 (1): 105~119    
    3. 1977 "평면식 태양열 집열기의 성능에 관한 연구" 한국농업기계학회지 = Journal of the Korean Society for Agricultural Machinery 2 (2): 37~45    
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    10. 1980 "미맥(米麥)의 비열(比熱)에 관한 연구(硏究)" 農業技術硏究報告 = Research reports of agricultural science and technology 7 (2): 145~155    
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