감마선을 이용한 Escherichia coli K12의 살균에서 persulfate의 효과
Effect of Persulfate on Disinfection of Escherichia coli K12 by Gamma Radiation
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A comparative experiment was conducted to compare the effects of persulfate withgamma radiation on the disinfection efficiencies against Escherichia coli K12. The microorganismused for the disinfection experiments were prepared by transferring a bacterial stock culture intoa 50 ml nutrient broth an incubating for 24 hrs at 37C. The initial concentration of the harvestedculture was approximately 107 to 109 CFU ml-1. The culture solution was irradiated at differentabsorbed doses of 0.1, 0.2, 0.3, 0.4, 0.5, 0.7, and 1 kGy, respectively. The disinfection efficiency ofpersulfate with gamma radiation of 0.3 kGy against Escherichia coli K12 was 97.2% and while thegamma radiation only was 90.01% at 0.3 kGy. Therefore, it could be thought that addition of persulfatein the disinfection of Escherichia coli K12 can enhance the disinfection efficiency when it isused together with gamma radiation.
Abstract
A comparative experiment was conducted to compare the effects of persulfate withgamma radiation on the disinfection efficiencies against Escherichia coli K12. The microorganismused for the disinfection experiments were prepared by transferring a bacterial stock culture intoa 50 ml nutrient broth an incubating for 24 hrs at 37C. The initial concentration of the harvestedculture was approximately 107 to 109 CFU ml-1. The culture solution was irradiated at differentabsorbed doses of 0.1, 0.2, 0.3, 0.4, 0.5, 0.7, and 1 kGy, respectively. The disinfection efficiency ofpersulfate with gamma radiation of 0.3 kGy against Escherichia coli K12 was 97.2% and while thegamma radiation only was 90.01% at 0.3 kGy. Therefore, it could be thought that addition of persulfatein the disinfection of Escherichia coli K12 can enhance the disinfection efficiency when it isused together with gamma radiation.
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