Application of Multistage Steam Distillation Column for Extraction of Essential Oil of Valeriana officinialis L. Cultivated in Iran

Maleky-dozzadeh, M.; Khadiv-Parsi, P.; Rezazadeh, Sh.; Firoozian, N.; Sadraei, A.; Amouei Torkmahalleh, M.

Application of Multistage Steam Distillation Column for Extraction of Essential Oil of Valeriana officinialis L. Cultivated in Iran

Document Type : Research note

Authors

M. Maleky-dozzadeh ¹

P. Khadiv-Parsi ¹

Sh. Rezazadeh ²

N. Firoozian ¹

A. Sadraei ¹

M. Amouei Torkmahalleh ³

¹ School of Chemical Engineering, University College of Engineering, University of Tehran, Tehran, Iran 2- Institute of Medicinal Plant, ACECR, Tehran, Iran

² Institute of Medicinal Plant, ACECR, Tehran, Iran

³ Chemical Engineering Program, Middle East Technical University, Northern Cyprus Campus (METUNCC)

Abstract

Essential oil of Valeriana officinialis L. cultivated in Iran was extracted using steam distillation technique and then analyzed by gas chromatography and gas chromatography-mass spectrometry. Optimization of extraction of essential oil was
performed using this technique. The extraction yield results for steam flow rates of 4, 7 and 9 L/min for a packed bed of 100 gram of plant were found to be 0.60, 0.52 and 0.47 percent, respectively. For bed heights of 35, 47.5 and 65 cm and a steam flow rate of 4 L/min the extraction yield was found to be 0.60, 0.36 and 0.24 percent. The results of multistage column for a total of 100 g packed bed and 4 L/min steam flow rate were 0.65, 0.65 and 0.6 for three, two and one stage distillation column, respectively. The oil yield was increased from 0.6 for standard roots to 0.7 for crushing roots.

Keywords

Multistage Column

Valerian Plant

Essential Oil

Steam Distillation