Pulse-modulated, high-frequency plasma sterilization at atmospheric-pressure

We studied atmospheric-pressure glow (APG) plasma excited with pulse-modulated RF at 27.12 MHz, using dielectric barrier electrodes. The antibacterial effect of APG plasma was examined using spore-forming bacteria: Bacillus atrophaeus, Geobacillus stearothermophilus, and the following selected speci...

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Bibliographic Details
Published in:Surface & coatings technology 2006-05, Vol.200 (20), p.5829-5835
Main Authors: Ohkawa, Hiroshi, Akitsu, Tetsuya, Tsuji, Masao, Kimura, Hideo, Kogoma, Masuhiro, Fukushima, Kinpei
Format: Article
Language:English
Subjects:
Aspergillus niger
Atmospheric pressure glow
Bacillus
Bacillus atrophaeus
Candida albicans
Cross-disciplinary physics: materials science
rheology
Escherichia coli
Exact sciences and technology
Geobacillus
Geobacillus stearothermophilus
Materials science
Other topics in materials science
Physics
Salmonella enteritidis
Staphylococcus aureus
Sterility assurance level
Sterilization
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Summary:We studied atmospheric-pressure glow (APG) plasma excited with pulse-modulated RF at 27.12 MHz, using dielectric barrier electrodes. The antibacterial effect of APG plasma was examined using spore-forming bacteria: Bacillus atrophaeus, Geobacillus stearothermophilus, and the following selected species of bacteria, a mold, and yeast-like fungus: Salmonella enteritidis, Staphylococcus aureus, Candida albicans, and Aspergillus niger. Optimum experimental conditions were sought, to find commonality among several conditions: antibacterial effect, neutral gas temperature, and homogeneity over the electrode surface.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2005.08.124