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等离子医学
SJR: 0.278 SNIP: 0.183 CiteScore™: 0.57

ISSN 打印: 1947-5764
ISSN 在线: 1947-5772

等离子医学

DOI: 10.1615/PlasmaMed.v1.i1.20
pages 21-25

Comparison of Point-to-Plane and Point-to-Point Corona Discharge for the Decontamination or Sterilization of Surfaces and Liquids

Vladimir Scholtz
Department of Physics and Measurements, Faculty of Chemical Engineering, Institute of Chemical Technology, Czech Republic
J. Julak
Institute of Immunology and Microbiology, 1st Faculty of Medicine, Charles University, Czech Republic
B. Stepankova
Department of Physics and Measurements, Faculty of Chemical Engineering, Institute of Chemical Technology, Czech Republic

ABSTRACT

We studied the decontamination of surfaces and inactivation of bacteria and yeast in liquids by low-temperature plasma generated in the DC corona discharge of an open-air type in the point-to-plane or point-to-point arrangement. We found that the inactivation in liquid suspensions is slightly more efficient with the point-to-plane discharge in comparison with the point-to-point one. In the case of agar surface decontamination, two types of inhibition zones were observed, which indicates the different mechanism of action for the point-to-point and point-to-plane discharges. This knowledge may be important in the future selection of microbicidal agents and in the development of efficient methods for low-temperature plasma decontamination or sterilization.