Issue Eur. Phys. J. Appl. Phys. Volume 46, Number 3, June 2009 Metamaterials Article Number 31001 Number of page(s) 7 Section Plasma, Discharges and Processes DOI 10.1051/epjap/2009065 Published online 17 April 2009

Eur. Phys. J. Appl. Phys. 46, 31001 (2009)
DOI: 10.1051/epjap/2009065

Deactivation of yeast by dielectric barrier discharge

N.N. Morgan¹, M.A. Elsabbagh¹, S. Desoky² and A.A. Garamoon<sup>3

1</sup>  Physics Department, Faculty of Science (male), Al-Azhar University, Nasr City, Cairo, Egypt
²  Microbiology Department, Faculty of Science (male), Al-Azhar University, Nasr City, Cairo, Egypt
³  Centre of Plasma Technology, Al-Azhar University, Nasr City, Cairo, Egypt

abdougaramoon@hotmail.com

Received: 3 July 2008 / Received in final form: 4 December 2008 / Accepted: 4 March 2009 / Published online: 17 April 2009

Abstract
Saccharomyces Cerevisiae (S. Cerevisiae) and Mrakia Frigida (M. Frigida) were deactivated using alternative current dielectric barrier discharge (DBD). The deactivation was done in argon and oxygen plasma under different discharge currents. It has been found that ozone and atomic oxygen play a significant role in the deactivation of S. Cerevisiae and M. Frigida when using DBD discharge, while argon ions are less important in the deactivation of the same microorganisms in argon DBD.

PACS
52.50.Dg - Plasma sources.
52.70.ds - Electric and magnetic measurements.
52.77.-j - Plasma applications.

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