Sterilization of Staphylococcus Aureus by an Atmospheric Non-Thermal Plasma Jet

被引：1

作者：

刘小虎 ^{[1
]}

洪枫 ^{[2
]}

郭颖 ^{[3
]}

张菁 ^{[1
,3
]}

石建军 ^{[1
,3
]}

机构：

[1] College of Materials Science and Engineering, Donghua University

[2] College of Chemistry, Chemical Engineering and Biotechnology, Donghua University

[3] College of Science, Donghua University

来源：

Plasma Science and Technology | 2013年 / 05期

基金：

中国国家自然科学基金;

关键词：

non-thermal plasma jet; atmospheric pressure; sterilization;

D O I：

暂无

中图分类号：

O358 [射流];

学科分类号：

080103 ; 080704 ;

摘要：

An atmospheric non-thermal plasma jet was developed for sterilizing the Staphylococcus aureus (S. aureus). The plasma jet was generated by dielectric barrier discharge (DBD), which was characterized by electrical and optical diagnostics. The survival curves of the bacteria showed that the plasma jet could effectively inactivate 10 6 cells of S. aureus within 120 seconds and the sterilizing efficiency depended critically on the discharge parameter of the applied voltage. It was further confirmed by scanning electron microscopy (SEM) that the cell morphology was seriously damaged by the plasma treatment. The plasma sterilization mechanism of S. aureus was attributed to the active species of OH, N 2 + and O, which were generated abundantly in the plasma jet and characterized by OES. Our findings suggest a convenient and low-cost way for sterilization and inactivation of bacteria.

引用

页码：439 / 442

页数：4

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