介质阻挡放电和介质阻挡电晕放电灭菌效果的试验研究

Experimental Research on Inactivation Bacteria Effect of DBD and DBCD

应用介质阻挡放电(DBD)和介质阻挡电晕放电 (DBCD)产生的低温等离子体,对金黄色葡萄球菌和大肠杆菌进行杀灭试验的结果发现,在90s内DBD和DBCD都对金黄色葡萄球菌和大肠杆菌的杀灭对数值KL达到了5。 DBCD使两种菌株减少的速度大于DBD。DBD和DBCD都使大肠杆菌减少的速度大于金黄色葡萄球菌。

E.coli and S.aureus are treated with the low- temperature plasma induced by the dielectric barrier discharge （DBD） and dielectric barrier corona discharge （DBCD） respectively, it is found that the killing logarithms of the low-temperature plasma induced by DBD and DBCD on the two strains reached 5 within 90 s of exposure. DBCD decreases the number of the two strains faster than DBD. Both DBD and DBCD decreases the number of E.coli faster than those of S.aureus.