Radiation Sensitivity of Some Toxigenic Molds Isolated from Deteriorated Rice

변질미(變質米)에서 분리된 독소생성(毒素生成)곰팡이의 방사선(放射線) 감수성(感受性)

  • Choi, Eon-Ho (Agricultural Biochemistry Laboratory, Korea Atomic Energy Research Institute) ;
  • Kim, Hong-Lyour (Agricultural Biochemistry Laboratory, Korea Atomic Energy Research Institute) ;
  • Lee, Su-Rae (Agricultural Biochemistry Laboratory, Korea Atomic Energy Research Institute)
  • 최언호 (한국원자력연구소 농업생화학연구실) ;
  • 김홍열 (한국원자력연구소 농업생화학연구실) ;
  • 이서래 (한국원자력연구소 농업생화학연구실)
  • Published : 1975.09.28

Abstract

Seven toxigenic molds isolated from deteriorated rice in Korea, Aspergillus clavatus, Asp. flavus var. columnaris, Asp. fumigatus, Asp. ochraceus, Penicillium citrinum, Pen. implicatum, and Pen. islandicum, were examined for their sensitivity toward Co-60 gamma rays for survival. Conidia of all tested species showed survival curves of sigmoidal type, from which decimal reduction doses were found to vary in the range of $14{\sim}33$ krad, induction doses, in the range of $12{\sim}56$ krad and inactivation factors at 200 krad, in the range of $4.6{\sim}12.8$, all at a dose rate of 11.56 krad/min. Dose rate effects on the radiosensitivity of Asp. flavus and Pen. islandicum conidia indicated that the higher dose rate (11.56 krad/min) caused decreases in decimal reduction doses as compared with the lower dose rate (2.67 krad/min).

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