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KMID : 0613820110210121710
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Journal of Life Science
2011 Volume.21 No. 12 p.1710 ~ p.1715
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Reduction Effect of Microorganisms by Nano Plasma ion (NPi)
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Kang Hyeon-Cheol
Yun Han-Seong
Sung Bong-Jo
Lee Sung-Hwa
Lee Jang-Woo
Seo Yong-Bae
Lee Myung-Suk
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Abstract
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The bactericidal effect of nano plasma ion (NPi) which was generated by NPi was analyzed using different kinds of microorganisms, exposure times, chamber sizes, ion amounts and distance. As the result of Escherichia coli, Pseudomonas aeruginosa, Salmonella typhimurium, Klebsiella pneumoniae, Staphylococcus aureus and Bacillus subtilis were shown different in decrement. Gram-negative bacteria E. coli showed the highest percentage (96.57%) and Gram-positive bacteria B. subtilis which produced spore has the lowest percentage (57.41%). From the exposure time of NPi most of the microorganisms were extinct at an early stage. According to the size of the chamber we compared the loss of E.coli and the experiment result shown, analyzed NPi using 5 chambers 0.005m³ to 30m³ for 2 hr, that when volume of the chamber increased, saturation ion and bactericidal effect was decreased. In addition, an NPi generator installed in the 1m³ chamber investigated the decrement of E. coli. Saturation ion concentration increased with decrement. Finally, E. coli showed a similar reduction according to the distance from NPi generator.
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KEYWORD
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Microorganism, Inactivation, Nano Plasma Ion (NPi)
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