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2015 | 13 | 1 |
Tytuł artykułu

Sterilization of bacteria suspensions and identification of radicals deposited during plasma treatment

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In this paper we will present results for plasma sterilization of planktonic samples of two reference strains of bacteria, Pseudomonas aeruginosa ATCC 27853 and Enterococcus faecalis ATCC 29212. We have used a plasma needle as a source of non-equilibrium atmospheric plasma in all treatments. This device is already well characterized by OES, derivative probes and mass spectrometry. It was shown that power delivered to the plasma is bellow 2 W and that it produces the main radical oxygen and nitrogen species believed to be responsible for the sterilization process. Here we will only present results obtained by electron paramagnetic resonance which was used to detect the OH, H and NO species. Treatment time and power delivered to the plasma were found to have the strongest influence on sterilization. In all cases we have observed a reduction of several orders of magnitude in the concentration of bacteria and for the longest treatment time complete eradication. A more efficient sterilization was achieved in the case of gram negative bacteria.
Wydawca
Czasopismo
Rocznik
Tom
13
Numer
1
Opis fizyczny
Daty
otrzymano
2014-01-31
zaakceptowano
2014-05-29
online
2014-11-26
Twórcy
autor
  • Institute of Physics, University of Belgrade, 11080 Belgrade, Serbia
  • Faculty of Dental Medicine, University of Belgrade, 11000 Belgrade, Serbia
  • Faculty of Physical Chemistry, University of Belgrade, University of Belgrade, 11000 Belgrade, Serbia
  • Faculty of Physical Chemistry, University of Belgrade, University of Belgrade, 11000 Belgrade, Serbia
  • Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
  • Faculty of Dental Medicine, University of Belgrade, 11000 Belgrade, Serbia
  • Institute of Physics, University of Belgrade, 11080 Belgrade, Serbia
  • Institute of Physics, University of Belgrade, 11080 Belgrade, Serbia
  • Institute of Physics, University of Belgrade, 11080 Belgrade, Serbia
  • Institute of Physics, University of Belgrade, 11080 Belgrade, Serbia
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_1515_chem-2015-0041
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