Observation of inactivation of Bacillus sbtilis spores under exposures of oxygen added argon atmospheric pressure plasma jet

Jie Shen; Cheng Cheng; Ying Zhao; Dezhi Xiao; Yan Lan; Hongbing Xie; Junli Cheng; Yuedong Meng; Jiangang Li; Paul K. Chu

doi:10.7567/JJAP.53.110310

Observation of inactivation of Bacillus sbtilis spores under exposures of oxygen added argon atmospheric pressure plasma jet

Jie Shen, Cheng Cheng, Ying Zhao, Dezhi Xiao, Yan Lan, Hongbing Xie, Junli Cheng, Yuedong Meng, Jiangang Li, Paul K. Chu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

21 Citations (Scopus)

Abstract

The inactivation of Bacillus subtilis spores by an Ar plasma jet mixed with different amounts of oxygen is reported. 5.8 × 10⁶ B. subtilis spores are sterilized by an Ar/O₂ (8.7%) plasma jet after exposure for 2 min. The densities of ozone and oxygen radicals in the Ar/O₂ plasma jet increase with oxygen concentration and are estimated by optical spectroscopy diagnostic. The malondialdehyde (MDA) test shows that oxygen radicals participate in bacterial inactivation. Scanning electron microscopy (SEM) reveals the deformation of the spore shape due to etching by oxygen radicals and the dependence of the degree of deformation on the density of oxygen radicals.

Original language	English
Article number	110310
Journal	Japanese Journal of Applied Physics
Volume	53
Issue number	11
Online published	14 Oct 2014
DOIs	https://doi.org/10.7567/JJAP.53.110310
Publication status	Published - Nov 2014

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title = "Observation of inactivation of Bacillus sbtilis spores under exposures of oxygen added argon atmospheric pressure plasma jet",

abstract = "The inactivation of Bacillus subtilis spores by an Ar plasma jet mixed with different amounts of oxygen is reported. 5.8 × 106 B. subtilis spores are sterilized by an Ar/O2 (8.7%) plasma jet after exposure for 2 min. The densities of ozone and oxygen radicals in the Ar/O2 plasma jet increase with oxygen concentration and are estimated by optical spectroscopy diagnostic. The malondialdehyde (MDA) test shows that oxygen radicals participate in bacterial inactivation. Scanning electron microscopy (SEM) reveals the deformation of the spore shape due to etching by oxygen radicals and the dependence of the degree of deformation on the density of oxygen radicals.",

author = "Jie Shen and Cheng Cheng and Ying Zhao and Dezhi Xiao and Yan Lan and Hongbing Xie and Junli Cheng and Yuedong Meng and Jiangang Li and Chu, {Paul K.}",

year = "2014",

month = nov,

doi = "10.7567/JJAP.53.110310",

language = "English",

volume = "53",

journal = "Japanese Journal of Applied Physics",

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publisher = "Japan Society of Applied Physics",

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TY - JOUR

T1 - Observation of inactivation of Bacillus sbtilis spores under exposures of oxygen added argon atmospheric pressure plasma jet

AU - Shen, Jie

AU - Cheng, Cheng

AU - Zhao, Ying

AU - Xiao, Dezhi

AU - Lan, Yan

AU - Xie, Hongbing

AU - Cheng, Junli

AU - Meng, Yuedong

AU - Li, Jiangang

AU - Chu, Paul K.

PY - 2014/11

Y1 - 2014/11

N2 - The inactivation of Bacillus subtilis spores by an Ar plasma jet mixed with different amounts of oxygen is reported. 5.8 × 106 B. subtilis spores are sterilized by an Ar/O2 (8.7%) plasma jet after exposure for 2 min. The densities of ozone and oxygen radicals in the Ar/O2 plasma jet increase with oxygen concentration and are estimated by optical spectroscopy diagnostic. The malondialdehyde (MDA) test shows that oxygen radicals participate in bacterial inactivation. Scanning electron microscopy (SEM) reveals the deformation of the spore shape due to etching by oxygen radicals and the dependence of the degree of deformation on the density of oxygen radicals.

AB - The inactivation of Bacillus subtilis spores by an Ar plasma jet mixed with different amounts of oxygen is reported. 5.8 × 106 B. subtilis spores are sterilized by an Ar/O2 (8.7%) plasma jet after exposure for 2 min. The densities of ozone and oxygen radicals in the Ar/O2 plasma jet increase with oxygen concentration and are estimated by optical spectroscopy diagnostic. The malondialdehyde (MDA) test shows that oxygen radicals participate in bacterial inactivation. Scanning electron microscopy (SEM) reveals the deformation of the spore shape due to etching by oxygen radicals and the dependence of the degree of deformation on the density of oxygen radicals.

UR - http://www.scopus.com/inward/record.url?scp=84909954133&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84909954133&origin=recordpage

U2 - 10.7567/JJAP.53.110310

DO - 10.7567/JJAP.53.110310

M3 - RGC 21 - Publication in refereed journal

SN - 0021-4922

VL - 53

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 11

M1 - 110310

ER -

Observation of inactivation of Bacillus sbtilis spores under exposures of oxygen added argon atmospheric pressure plasma jet

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