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Formation of ROS and RNS in Water Electro-Sprayed through Transient Spark Discharge in Air and their Bactericidal Effects
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SYSNO ASEP 0421972 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Formation of ROS and RNS in Water Electro-Sprayed through Transient Spark Discharge in Air and their Bactericidal Effects Author(s) Machala, Z. (SK)
Tarabová, B. (SK)
Hensel, K. (SK)
Doležalová, Eva (UFP-V) RID
Šikurová, L. (SK)
Lukeš, Petr (UFP-V) RID, ORCIDSource Title Plasma Processes and Polymers. - : Wiley - ISSN 1612-8850
Roč. 10, č. 7 (2013), s. 649-659Number of pages 11 s. Publication form Print - P Language eng - English Country DE - Germany Keywords Plasma electrospray ; water ; bacteria ; hydrogen peroxide ; peroxynitrite ; cold plasma ; water electro-spray Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects IAAX00430802 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GD104/09/H080 GA ČR - Czech Science Foundation (CSF) MEB0810116 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFP-V - RVO:61389021 UT WOS 000322371700008 EID SCOPUS 84879849826 DOI 10.1002/ppap.201200113 Annotation Chemical and bactericidal effects induced by plasma in water upon electro-spraying through DC-driven positive transient spark discharge in air were investigated. Inactivation of E. coli was determined in dependence on pH (controlled by buffers) and correlated with chemical changes induced in water. Productions of hydrogen peroxide, nitrites, nitrates, peroxynitrites and pH changes were determined, and the extent of oxidative stress induced in bacteria was evaluated. The degree of inactivation and oxidative damage of bacteria increased with the increasing acidity of the solution. Acidified nitrites interacting with hydrogen peroxide were determined as the most important bactericidal ROS/RNS agents in plasma-treated water. A possible role of peroxynitrites, ozone and metal nanoparticles is discussed. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2014
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