Kinetics and Bacterial Inactivation Induced by Peroxynitrite in Electric Discharges in Air

Abstract : The mechanism of bacterial inactivation by electric discharges (non-thermal plasma) is examined on the basis of the action of the formed peroxynitrite and hydrogen peroxide on the external membrane of bacteria. A model accounts for the gas to liquid transfer of the active species which react with the bacterial wall at the liquid surface or /and in the bulk solution. Direct exposure to the glidarc discharge induces a pseudo zero order decay of the bacterial concentration, followed by a pseudo 1st order step for low concentrations. Post-discharge reactions develop after switching off the discharge according to a 1st order mechanism and show that active species drift in the solution. Additionally the bactericidal properties of pure water exposed to the discharge (i.e., ``Plasma Activated Water'') was evidenced even 24 h after performing the plasma treatment.
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Plasma Chemistry and Plasma Processing, Springer Verlag, 2012, 32 (4), pp.675-692. 〈10.1007/s11090-012-9383-y〉
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https://hal-agroparistech.archives-ouvertes.fr/hal-01562093
Contributeur : Armelle Sielinou <>
Soumis le : jeudi 13 juillet 2017 - 15:40:36
Dernière modification le : mercredi 26 juillet 2017 - 16:37:03

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Murielle Naitali, Jean-Marie Herry, Eugen Hnatiuc, Georges Kamgang, Jean-Louis Brisset. Kinetics and Bacterial Inactivation Induced by Peroxynitrite in Electric Discharges in Air. Plasma Chemistry and Plasma Processing, Springer Verlag, 2012, 32 (4), pp.675-692. 〈10.1007/s11090-012-9383-y〉. 〈hal-01562093〉

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