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Open AccessArticle

Acinetobacter baumannii Deactivation by Means of DBD-Based Helium Plasma Jet

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High Voltage Laboratory (Plasma Technology Room), Department of Electrical and Computer Engineering, University of Patras, 26 504 Rion, Greece
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Department of Microbiology, School of Medicine, University of Patras, 26 504 Patras, Greece
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Department of Chemical Engineering, Section of Chemical Technology and Applied Physical Chemistry, University of Patras, 26 504 Rion, Greece
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Institute of Chemical Engineering Sciences (ICES)-FORTH, 26 504 Rion, Greece
*
Author to whom correspondence should be addressed.
Current Address: LPGP, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay, France.
Plasma 2019, 2(2), 77-90; https://doi.org/10.3390/plasma2020008
Received: 4 March 2019 / Revised: 26 March 2019 / Accepted: 28 March 2019 / Published: 3 April 2019
(This article belongs to the Special Issue Atmospheric Pressure Plasma Sources Applied in Biological Systems)
Acinetobacter baumannii is a typically short, almost round, rod-shaped (coccobacillus) Gram-negative bacterium. It can be an opportunistic pathogen in humans, affecting people with compromised immune systems, and it is becoming increasingly important as a hospital-associated (nosocomial) infection. It has also been isolated from environmental soil and water samples. In this work, unlike conventional medical methods like antibiotics, the influence of atmospheric-pressure cold plasma on this bacterium is evaluated by means of a colony count technique and scanning electron microscopy. The plasma used here refers to streamers axially propagating into a helium channel penetrating the atmospheric air. The plasma is probed with high resolution optical emission spectroscopy and copious reactive species are unveiled under low-temperature conditions. Based on the experimental results, post-treatment (delayed) biochemical effects on Acinetobacter baumannii and morphological modifications appear dominant, leading to complete deactivation of this bacterium. View Full-Text
Keywords: DBD discharges; plasma jets; bacteria; Acinetobacter baumannii; sterilization DBD discharges; plasma jets; bacteria; Acinetobacter baumannii; sterilization
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Svarnas, P.; Spiliopoulou, A.; Koutsoukos, P.G.; Gazeli, K.; Anastassiou, E.D. Acinetobacter baumannii Deactivation by Means of DBD-Based Helium Plasma Jet. Plasma 2019, 2, 77-90.

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