Mass Transfer Modeling in the Process of Thyme Essential Oil Extraction and Evaluation of Physico-Chemical Properties

Document Type : Original Article

Authors

Sahand University of Technology

Abstract

Thyme (Thymus vulgaris L.) is a medicinal plant which its essential oil has been widely used due to its unique properties. Different extraction methods have been utilized to extract plant essential oil and in the present study, hydro distillation glass-Clevenger apparatus was used for extraction of thyme essential oil for 2 h. Obtained result indicated that thyme essential oil extraction yield was 2.32% (v/v). Furthermore, a mathematical model to predict and model the thyme essential oil extraction curve by Fick’s second law was utilized. This model was established based on difference of the concentration of points and the diffusion coefficient of 4.54×10-11 m2/s. The result of the curve obtained by the proposed mathematical model, fitted very well (98%) with the observed experimental results. Chemical composition assessment of the extracted thyme essential oil using GC-MS technique indicated that thymol and carvacrol are two main bioactive compounds of thyme essential oil. Antioxidant activity of the extracted thyme essential oil was also 95.1%.

Keywords

References

 
 
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Iranian Chemical Engineering Journal
Volume 19, Issue 109
July and August 2020
Pages 27-36

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