PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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The interaction of an atmospheric pressure plasma jet using argon or argon plus hydrogen peroxide vapour addition with bacillus subtilis |
Deng San-Xi(邓三喜)a)†,Cheng Cheng(程诚)a), Ni Guo-Hua(倪国华)a), Meng Yue-Dong(孟月东)a), and Chen Hua(陈华)b) |
a Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China; b Key Laboratory of Ion Beam Bioengineering, Chinese Academy of Sciences, Hefei 230031, China |
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Abstract This paper reports that an atmospheric pressure dielectric barrier discharge plasma jet, which uses argon or argon + hydrogen peroxide vapour as the working gas, is designed to sterilize the bacillus subtilis. Compared with the pure argon plasma, the bacterial inactivation efficacy has a significant improvement when hydrogen peroxide vapour is added into the plasma jet. In order to determine which factors play the main role in inactivation, several methods are used, such as determination of optical emission spectra, high temperature dry air treatment, protein leakage quantification, and scanning electron microscope. These results indicate that the possible inactivation mechanisms are the synergistic actions of chemically active species and charged species.
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Received: 21 December 2009
Revised: 05 March 2010
Accepted manuscript online:
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PACS:
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52.75.-d
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(Plasma devices)
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52.77.-j
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(Plasma applications)
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52.80.Tn
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(Other gas discharges)
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87.80.-y
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(Biophysical techniques (research methods))
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Fund: Project supported by the Science Foundation of Hefei Institutes of Physical Science, Chinese Academy of Sciences (Grant No. 085FZ10134). |
Cite this article:
Deng San-Xi(邓三喜),Cheng Cheng(程诚), Ni Guo-Hua(倪国华), Meng Yue-Dong(孟月东), and Chen Hua(陈华) The interaction of an atmospheric pressure plasma jet using argon or argon plus hydrogen peroxide vapour addition with bacillus subtilis 2010 Chin. Phys. B 19 105203
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