TY - JOUR ID - 39491 TI - Inactivation of Gram-Negative Bacteria by Low-Pressure RF Remote Plasma Excited in N2-O2 Mixture and SF6 Gases JO - Iranian Journal of Medical Sciences JA - IJMS LA - en SN - 0253-0716 AU - Al-Mariri, Ayman AU - Saloum, Saker AU - Mrad, Omar AU - Swied, Ghayath AU - Alkhaled, Bashar AD - Department of Molecular Biology and Biotechnology, Atomic Energy Commission of Syria, Damascus, Syria AD - Department of Physics, Atomic Energy Commission of Syria, Damascus, Syria AD - Department of Chemistry, Atomic Energy Commission of Syria, Damascus, Syria Y1 - 2013 PY - 2013 VL - 38 IS - 4 SP - 334 EP - 338 KW - Bacteria KW - Inactivation KW - Low pressure KW - Plasma KW - Polymer DO - N2 - 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. UR - https://ijms.sums.ac.ir/article_39491.html L1 - https://ijms.sums.ac.ir/article_39491_fcd248df1bd6db9740465f404688706c.pdf ER -