Efficacy of Plasma ONE apparatus for disinfection of S. aureus , P. aeruginosa and E. coli bacteria from the solid surfa
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RESEARCH
Efficacy of Plasma ONE apparatus for disinfection of S. aureus, P. aeruginosa and E. coli bacteria from the solid surface Miroslav Zashev1 · Deyan Donchev2 · Ivan Ivanov3 · Radosvet Gornev1 Received: 27 December 2019 / Accepted: 9 November 2020 © Islamic Azad University 2020
Abstract Cold atmospheric plasma (CAP) is a cocktail of charged particles with high antibacterial potency. In this study, we evaluated CAP efficacy generated by Plasma ONE, a mobile medical device against common chronic wound pathogens. Two sets of working saline suspensions, i.e. 1 05 and 1 03 CFU/ml of each reference strain E. coli, P. aeruginosa and S. aureus, were inoculated on Mueller–Hinton media plates and exposed to CAP for 30, 60, 120, 300 s and incubated for 24 h. The radiating nozzle surface was 3.4 cm. Plasma efficacy evaluation was based on the diameter of attained inactivation area and bacterial decontamination rate within. Plasma ONE device showed high capacity against S. aureus in all time intervals and exposure yielded a gradual time-dependent CFU reduction starting with 99.6% after 30 s in the 105 plates. Comparison between mean area diameters of S. aureus and E. coli of 30 and 120 s indicated a significant area increase (p
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