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Inactivation of Microorganisms Using Cold Atmospheric Pressure Plasma with Different Temporal Discharge Characteristics
Author(s) -
Mertens Nina,
Mahmoodzada Mostafa,
Helmke Andreas,
Grünig Petra,
Laspe Petra,
Emmert Steffen,
Viöl Wolfgang
Publication year - 2014
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201300184
Subject(s) - dielectric barrier discharge , plasma , microorganism , ozone , atmospheric pressure , materials science , atmospheric pressure plasma , biophysics , nanosecond , radiation , chemistry , bacteria , analytical chemistry (journal) , optoelectronics , dielectric , environmental chemistry , laser , biology , optics , physics , oceanography , organic chemistry , quantum mechanics , genetics , geology
The effect of CAP on the dermatologic relevant bacteria E. coli , P. aeruginosa and the yeast C. albicans is studied in vitro. Two dielectric barrier discharge plasma devices with different temporal pulse characteristics are compared concerning their efficacy of germ inactivation. The study includes analyses of temperature, ozone concentration and UV radiation in the discharge gap as well as the influence on the growth medium in terms of temperature, pH value, N O 2 − , N O 3 − , and H 2 O 2 . The investigations are concluded by tests of growth inhibition, the morphological structure, and DNA damages of the microorganisms. The results demonstrate, that both devices are able to inactivate the germs, although the nanosecond pulsed plasma source has a higher efficacy based on a higher chemical discharge productivity.