电子束辐照对不同载体上两种微生物的消毒效果研究.

Objective To investigate the effect of electron beam irradiation on the disinfection of Candida albicans and Bacillus poilus spores on different carriers and to explore the application value of electron beam irradiation in the field of disinfection. Methods Candida albicans and Bacillus pummelos spores were used as indicator microorganisms to make infection carriers on different material carriers, and the killing logarithm was calculated by electron beam irradiation of 2 to 6kGy process dose. The minimum process dose of all kinds of infection carriers with killing logarithm 3 3.00 was selected for simulated field experiment, and the disinfection efficacy was evaluated. Results The average killing logarithm value of Candida albicans on polytetrafluoroethylene sheet, glass sheet, and stainless-steel sheet and Bacillus pummelos spores on cloth and stainless-steel strip was 3 3.00 when the electron beam irradiation dose was M 4kGy, and 3 3.00 on Kraft paper carrier when the process dose was 3 5kGy. In the simulated field test, when the dose of electron beam irradiation reached 5.12 to 5.54kGy, the average killing logarithm values of Candida albicans on four carriers and Bacillus pummelos spores on five carriers were all 3 3.00. Conclusion When the dose of electron beam irradiation reaches 3 5kGy, it has a good disinfection effect on fungi and radiation indicator microorganisms on different carriers. Electron beam irradiation penetrating disinfection should comprehensively consider the difference of content specification and density and select the appropriate irradiation dose. [ABSTRACT FROM AUTHOR]