间接曝光式等离子体消毒机对不同微生物杀灭效果的研究

目的研究间接曝光式大气压辉光放电等离子体消毒机的杀菌效果。方法采用载体定量杀菌试验方法进行了实验室观察。结果间接曝光式大气压辉光放电等离子体消毒机对染菌载体上的金黄色葡萄球菌和大肠杆菌作用60 s,平均杀灭率达到99.99%;作用180 s和120 s,对金黄色葡萄球菌和大肠杆菌杀灭率均达到100%。该等离子体消毒机作用4 min,对载体上白色念珠菌的杀灭率达到99.99%,作用8 min杀灭率为100%。用该等离子体消毒机对载体上枯草杆菌黑色变种芽孢作用11 min,平均杀灭率为99.91%。结论间接曝光式大气压辉光放电等离子体消毒机对琼脂表面的细菌繁殖体、真菌和细菌芽孢都具有快速杀灭作用,达到消毒要求。

STUDY ON EFFICACY OF INDIRECT EXPOSURE PLASMA DISINFECTOR (IEPD) IN KILLING DIFFERENT MICROORGANISMS

Objective To study the germicidal efficacy of indirect exposure plasma disinfector(IEPD).Method Carrier quantitative germicidal test was used to carry out laboratory observation.Results Disinfection with the IEPD for 60 s killed 99.99% in average of Staphylococcus aureus and Escherichia coli on carrier(agar).To achieve 100% killing rate of above two species of vegetative forms of bacteria 180 s and 120 s were needed respectively.Disinfection with this plasma disinfector for 4 minutes killed 99.99% of Candida albicans on agar and disinfection for 8 minutes could kill 100%.For Bacillus subtilis var.niger spores,the killing rate achieved 99.99% in about 11 min.Conclusion The IEPD has rapid and highly efficient killing effect on vegetative forms of bacteria,fungi and bacterial spores.