BIOPLASMAS & PLASMAS WITH LIQUIDS - Joint Conference of COST ACTIONS TD1208 “Electrical discharges with liquids for future
applications” & MP1101 Biomedical Applications of Atmospheric Pressure Plasma Technology, Bertinoro, Italy, 13th-17thSeptember 2015
Comparing the bacteria removal effect of Dielectric Barrier Discharge
(DBD) and atmospheric plasma jet on Escherichia coli (E-coli ) and
Staphylococcus Aureus Bacteria
Maasoomeh.Damercheli1, Shohreh.Khatami1, Maryam.Ghasemloo2
1
Plasma physics research center, Science and Research Branch, Islamic Azad
University, Tehran, Iran.
2
Department of Physics, Yadegar-e-Imam Khomeini (RAH) Shahre Rey Branch,
Islamic Azad University,Tehran,Iran.
Staphylococcus Aureus is the strongest pathogenic bacteria which causes a wide range of infections, from
simple skin infections to life-threatening diseases. Staphylococcus Aureus is one of the five very common
causes for nosocomial infections, particularly after surgery infections. The bacterium is resistant to many
chemical methods and, consequently, causes problems in the process of bacteria removal. Escherichia coli, or
briefly E.coli, is commonly found in the intestines of warm-blooded animals and some strains of which cause
food poisoning and diarrhea. In this study, the effect of bacteria-removing property of two kinds of cold
plasma systems (atmospheric plasma jet and DBD) [1-4] was investigated by Argon gas with the purity of
99.99% under identical conditions (the same energy). The final results suggested more effectiveness of DBD
compared to plasma jet in removing the bacteria. It should be mentioned that E.Coil needs more plasma
radiation (time) to be removed compared to Staphylococcus Aureus.
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[2] T.C.Montie, K.Kelly-Wintenberg, J.R,Roth, IEEE Trans.Plasma.Sci, 28(2000)1,pp.41-50.
[3]M.Laroussi, IEEE Trans.Plasma.Sci 30 (2002)4, pp.1409-1415.
[4]A.Sharma, A.Pruden,O.Stan, G.J. Gollins, IEEE Trans.Plasma 34 (2006)4, pp.1290-1296.