Journal article
Effect of N-2/O-2 composition on inactivation efficiency of Escherichia coli by discharge plasma at the gas-solution interface
Clinical plasma medicine, v 7-8, pp 1-8
01 Dec 2017
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Bacterial inactivation by discharge plasma is affected by many factors including gas type. No uniform conclusion for the effect of working gas type on the inactivation efficiency has been reached until now. In this work, the gas type and composition (O-2, N-2 and air) on the inactivation efficiency of Escherichia coli by corona discharge plasma at the gas-solution interface produced using needle high-voltage electrode above the liquid were systemically investigated. It was found that air plasma had strong sterilization capability, followed by N-2 plasma, while O-2 plasma had the lowest sterilization capability. The reason for the gas type and composition to influence the sterilization capability was due to that they influenced the nitrite production in solution which further reacted with plasma-produced H2O2 in acidified medium to form a strong oxidant peroxynitrite. The produced peroxynitrite could damage both the membrane and DNA, especially the former, and consequently inactivate the bacteria lethally.
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Details
- Title
- Effect of N-2/O-2 composition on inactivation efficiency of Escherichia coli by discharge plasma at the gas-solution interface
- Creators
- Zhigang Ke - Hefei Institutes of Physical SciencePrutchayawoot Thopan - Chiang Mai UniversityGreg Fridman - Drexel Univ, Drexel Plasma Inst, 200 Fed St Suite 500, Camden, NJ 08103 USAVandana Miller - Drexel UniversityLiangdeng Yu - Chiang Mai Univ, Plasma & Beam Phys Res Facil, Dept Phys & Mat Sci, Fac Sci, Chiang Mai 50200, ThailandAlexander Fridman - Drexel UniversityQing Huang - Hefei Institutes of Physical Science
- Publication Details
- Clinical plasma medicine, v 7-8, pp 1-8
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- 11405220; 11635013; 11475217 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC) 1608085MA20 / Natural Science Foundation of Anhui Province Hundred Talents Program of the Chinese Academy of Sciences; Chinese Academy of Sciences 2014289 / Youth Innovation Promotion Association of the Chinese Academy of Sciences
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Microbiology and Immunology; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000424614500001
- Scopus ID
- 2-s2.0-85034759677
- Other Identifier
- 991019168203304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Medicine, Research & Experimental