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Inactivation of Escherichia coli in the flowing afterglow of an N2 discharge at reduce pressure: study of the destruction mechanisms of bacteria and hydrodynamics of the afterglow flow

Published online by Cambridge University Press:  04 May 2006

S. Cousty ,
S. Villeger ,
J. P. Sarette ,
A. Ricard  and
M. Sixou
S. Cousty*
Affiliation:
CPAT, University Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, France
S. Villeger
Affiliation:
CPAT, University Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, France
J. P. Sarette
Affiliation:
CPAT, University Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, France
A. Ricard
Affiliation:
CPAT, University Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, France
M. Sixou
Affiliation:
Dental School University Paul Sabatier, 118 route de Narbonne, 31062 Toulouse, France
*
sarahcousty@hotmail.com
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Abstract

We present the optimization of a sterilization process with a N2 flowing afterglow post-discharge. First we study the inactivation of bacteria (E. coli) submitted to the post-discharge, and discuss the mechanisms of bacteria inactivation. Then we evaluate the volume repartition of the active species (N atoms produced by plasma discharge) in the chamber of treatment.

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