Highly Effective Large-Area Inactivation of B. subtilis Spore Using a Planar Dielectric Barrier Discharge Jet With CF4/Air Mixture

被引：4

作者：

Yang, Yi-Wei ^{[1
]}

Wu, Jane-Yii ^{[2
]}

Chiang, Ming-Hung ^{[1
]}

Wu, Jong-Shinn ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Mech Engn, Hsinchu 30010, Taiwan

[2] Da Yeh Univ, Dept Bioind Technol, Changhua 51591, Taiwan

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2012年 / 40卷 / 11期

关键词：

Air and B. subtilis spore; atmospheric-pressure plasma (APP); CF4; dielectric barrier discharge (DBD); inactivation; sterilization; ETHYLENE-OXIDE; PRESSURE; STERILIZATION;

D O I：

10.1109/TPS.2012.2214238

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：

In this paper, we demonstrate that, by adding a small amount of CF4 (2%) into a compressed-air planar dielectric barrier discharge (DBD), one can effectively inactivate a B. subtilis spore up to 50 mm in width in the postdischarge jet region after ten passes of exposure of plasma plume (equivalent plasma exposure time of 1 s) for treatment distance of up to 14 mm for the spore concentration in the range of 10(5)-10(7) CFU/mL. A possible mechanism is proposed, i.e., the chemically active F atoms and CFn (n = 1-3) are generated through the help of abundant excited nitrogen molecules in the postdischarge region.

引用

页码：3003 / 3006

页数：4

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