| Issue |
E3S Web Conf.
Volume 286, 2021
10th International Conference on Thermal Equipments, Renewable Energy and Rural Development (TE-RE-RD 2021)
|
|
|---|---|---|
| Article Number | 02004 | |
| Number of page(s) | 14 | |
| Section | Renewable Energy | |
| DOI | https://doi.org/10.1051/e3sconf/202128602004 | |
| Published online | 12 July 2021 | |
Investigation of the thermodynamic and physicochemical properties of lavender oil (Lavandula angustifolia Mill.)-ethanol-water system
1 University of Food Technologies, Plovdiv, 4002, Bulgaria
2 Trakia University, Dept. Food Technology, Yambol, 8600, Bulgaria
3 PlantGeneticResearch Group, Agrobioinstitute, Agricultural Academy, 1164, Sofia, Bulgaria
* Corresponding author: st_tasheva@abv.bg
The thermodynamic and physicochemical properties of lavender oil (Lavandula angustifolia Mill.)-ethanol-water system were measured. The chemical composition of solutions of the lavender oil in 70%, 75%, 80%, 85%, 90%, and 95% ethanol was determined using GC/MS analysis. The main compounds in the solutions are oxygenated monoterpenes (β-linalool, terpinen-4-ol, α-terpineol, and linalyl acetate), followed by monoterpene hydrocarbons ((Z)-β-ocimene and (E)-β-ocimene), and sesquiterpene hydrocarbons (β-caryophyllene and (E)-β-farnesene). The ternary phase diagrams were constructed. By multiply linear regression model for surface tension prediction was applied. The thermodynamic and kinetic parameters of lavender oil – ethanol - water system were calculated (energy of Gibb’s, enthalpy, entropy, energy of activation, and coefficient of diffusion).
© The Authors, published by EDP Sciences, 2021
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