Highly effective fungal inactivation in He+O2 atmospheric-pressure nonequilibrium plasmas

Xiong, Z., Lu, X.P., Feng, A., Pan, Y., & Ostrikov, K. (2010) Highly effective fungal inactivation in He+O2 atmospheric-pressure nonequilibrium plasmas. Physics of Plasmas, 17(12), pp. 123502-1.

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Abstract

Highly effective (more than 99.9%) inactivation of a pathogenic fungus Candida albicans commonly found in oral, respiratory, digestive, and reproduction systems of a human body using atmospheric-pressure plasma jets sustained in He+ O2 gas mixtures is reported. The inactivation is demonstrated in two fungal culture configurations with open (Petri dish without a cover) and restricted access to the atmosphere (Petri dish with a cover) under specific experimental conditions. It is shown that the fungal inactivation is remarkably more effective in the second configuration. This observation is supported by the scanning and transmission electron microscopy of the fungi before and after the plasma treatment. The inactivation mechanism explains the experimental observations under different experimental conditions and is consistent with the reports by other authors. The results are promising for the development of advanced health care applications.

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23 citations in Web of Science®

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ID Code: 73798
Item Type: Journal Article
Refereed: Yes
Additional URLs:
DOI: 10.1063/1.3526678
ISSN: 1070-664X
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2010 American Institute of Physics
Deposited On: 11 Jul 2014 01:03
Last Modified: 13 Jul 2014 23:26

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