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Plasma Medicine
SJR: 0.271 SNIP: 0.316 CiteScore™: 1.9

ISSN Druckformat: 1947-5764
ISSN Online: 1947-5772

Plasma Medicine

DOI: 10.1615/PlasmaMed.2014011938
pages 57-65

Treatment of Microorganisms in Vegetables and Fruits by Gliding Arc

Mohamed El Shaer
Plasma & Energy Applications Research Laboratory, Zagazig, Department of Engineering Physics and Mathematics, Faculty of Engineering, Zagazig University, Zagazig, Egypt
M. Mobasher
Plasma & Energy Applications Research Laboratory, Zagazig, Department of Engineering Physics and Mathematics, Faculty of Engineering, Zagazig University, Zagazig, Egypt
A. Abdelghany
PEARLZ (Plasma & Energy Applications Research Laboratory), Faculty of Engineering, Zagazig University, Zagazig, Egypt

ABSTRAKT

In this study, we constructed a gliding arc to investigate the treatment of microorganisms in vegetables and fruits at atmospheric pressure using the microorganism Erwinia carotovora subsp. carotovora. The gliding arc was driven by direct current (DC) voltage between two knife-shaped electrodes. The treatment of potatoes using this method was effective against this pathogen. The disinfection duration was a few seconds, which is rather fast, with no overheating. The use of a thermal image sensor enabled us to determine the percentage of the concentration of individual temperatures in the arc region. Using this method, we were able to identify thermal and nonthermal regions of the arc. The temperature increase of the potatoes during plasma treatment by gliding arc at atmospheric pressure was only few degrees above room temperature, assuring a mild treatment of biomaterials.


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