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

被引：40

作者：

Liu Xiaohu ^{[1
]}

Hong Feng ^{[2
]}

Guo Ying ^{[3
]}

Zhang Jing ^{[1
,3
]}

Shi Jianjun ^{[1
,3
]}

机构：

[1] Donghua Univ, Coll Mat Sci & Engn, Shanghai 201620, Peoples R China

[2] Donghua Univ, Coll Chem Chem Engn & Biotechnol, Shanghai 201620, Peoples R China

[3] Donghua Univ, Coll Sci, Shanghai 201620, Peoples R China

来源：

PLASMA SCIENCE & TECHNOLOGY | 2013年 / 15卷 / 05期

基金：

中国国家自然科学基金;

关键词：

non-thermal plasma jet; atmospheric pressure; sterilization; PRESSURE PLASMAS; INACTIVATION; DISCHARGE; RADIATION;

D O I：

10.1088/1009-0630/15/5/09

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 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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