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KMID : 0380619750070030148
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Korean Journal of Food Science and Technology
1975 Volume.7 No. 3 p.148 ~ p.153
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Radiation Sensitivity of Some Toxigenic Molds Isolated from Deteriorated Rice
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이서래/Lee, Su Rae
최언호/김홍열/Choi, Eon Ho/Kim, Hong Lyour
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Abstract
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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∼33 krad, induction doses, in the range of 12∼56 krad and inactivation factors at 200 krad, in the range of 4.6∼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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