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Distillation of essential oil and simulation of electromagnetic power distribution in a microwave oven

Published online by Cambridge University Press:  16 May 2012

Mahit Gunes  and
Mehmet Hakki Alma
Mahit Gunes*
Affiliation:
Department of Electrical and Electronics Engineering, University of Kahramanmaras Sutcu Imam, 46100 Kahramanmaras, Turkey. Phone: +90 344 219 17 86
Mehmet Hakki Alma
Affiliation:
Department of Industrial Engineering of Forestry, University of Kahramanmaras Sutcu Imam, 46100 Kahramanmaras, Turkey.
*
Corresponding author: M. Gunes Email: mgunes@ksu.edu.tr
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Abstract

In the present study, the essential oil from the leaves of River Red Gum (Eucalyptus camaldulensis Dehnh) was distilled by microwave applied in situ hydrodistillation (MWHD) and the properties obtained were compared with hydrodistillation (HD) techniques. The chemical composition of essential oil obtained by the microwave method was analyzed by gas chromatography (GC) and GC–mass spectrometry (MS). The results showed that the essential oil from E. camaldulensis could successfully be distilled by using microwave irradiation power. Microwave power has been supplied from a cavity having a multimode microwave reactor 2455 MHz with a maximum power of 1000 W. Electromagnetic power distribution has been analyzed inside the cavity. The yield of essential oil increased with increasing microwave irradiation power. It was also found that the content of main compounds clearly varied according to methods applied. However, the yield of essential oil determined by MWHD was slightly lower than that of conventional HD method at conditions studied.

Keywords

Microwave irradiationElectromagnetic power distributionMicrowave cavityEssential oil distillationRiver Red Gum
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 4 , Issue 5 , October 2012 , pp. 545 - 551
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2012

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