Bactericidal action of the plasma of high-frequency capacitive and barrier discharges on microorganisms

The bactericidal action of the plasma of a high-frequency discharge excited at a frequency f = 5.28 MHz and a low pressure in air on different test-strains of microorganisms has been investigated. The high-efficiency plasma inactivation of strains of E. coli , B. subtilis , C. albicans , and S. aure...

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Bibliographic Details
Published in:Journal of engineering physics and thermophysics 2009-05, Vol.82 (3), p.419-426
Main Authors: Azharonok, V. V., Krat’ko, L. E., Nekrashevich, Ya. I., Filatova, I. I., Mel’nikova, L. A., Dudchik, N. V., Yanetskaya, S. A., Bologa, M. K.
Format: Article
Language:English
Subjects:
Bacteriology
Classical Mechanics
Colony-forming cells
Complex Systems
Engineering
Engineering Thermodynamics
Escherichia coli
Heat and Mass Transfer
Industrial Chemistry/Chemical Engineering
Plasma
Thermodynamics
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Summary:The bactericidal action of the plasma of a high-frequency discharge excited at a frequency f = 5.28 MHz and a low pressure in air on different test-strains of microorganisms has been investigated. The high-efficiency plasma inactivation of strains of E. coli , B. subtilis , C. albicans , and S. aureus at an initial contamination N 0 ≤ 10 3 CFU / ml was detected. It was established that the most probable sterilization agents of the plasma generated are the “hot” and “cold” OH radicals, the excited electrically neutral N 2 and O 2 molecules, and the UV plasma radiation.
ISSN:1062-0125
1573-871X
DOI:10.1007/s10891-009-0210-0