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arXiv · 1904.03744

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

P. Svarnas·A. Spiliopoulou·P. G. Koutsoukos·Kristaq Gazeli·E. D. Anastassiou
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Abstract

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.

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P. Svarnas, A. Spiliopoulou, P. G. Koutsoukos, Kristaq Gazeli, E. D. Anastassiou. 2019-04-07. Acinetobacter baumannii Deactivation by Means of DBD-Based Helium Plasma Jet. https://doi.org/10.3390/plasma2020008

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