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Inactivation of Gram-Negative Bacteria by Low-Pressure RF Remote Plasma Excited in N2-O2 Mixture and SF6 Gases | ||
Iranian Journal of Medical Sciences | ||
مقاله 8، دوره 38، شماره 4، دی 2013، صفحه 334-338 اصل مقاله (333.9 K) | ||
نوع مقاله: Brief Report(s) | ||
نویسندگان | ||
Ayman Al-Mariri* 1؛ Saker Saloum2؛ Omar Mrad3؛ Ghayath Swied1؛ Bashar Alkhaled2 | ||
1Department of Molecular Biology and Biotechnology, Atomic Energy Commission of Syria, Damascus, Syria | ||
2Department of Physics, Atomic Energy Commission of Syria, Damascus, Syria | ||
3Department of Chemistry, Atomic Energy Commission of Syria, Damascus, Syria | ||
چکیده | ||
The role of low-pressure RF plasma in the inactivation of Escherichia coli O157, Klebsiella pneumoniae, Proteus mirabilis, and Enterobacter sakazakii using N2-O2 and SF6 gases was assessed. 1×109 colony-forming units (CFUs) of each bacterial isolate were placed on three polymer foils. The effects of pressure, power, distance from the source, and exposure time to plasma gases were optimized. The best conditions to inactivate the four bacteria were a 91%N2-9%O2 mixture and a 30-minute exposure time. SF6 gas was more efficient for all the tested isolates in as much as the treatment time was reduced to only three minutes. Therefore, low-pressure plasma could be used to sterilize heat and/or moisture-sensitive medical instruments. | ||
کلیدواژهها | ||
Bacteria؛ Inactivation؛ Low pressure؛ Plasma؛ Polymer | ||
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