Investigation of the thermodynamic and physicochemical properties of lavender oil (Lavandula angustifolia Mill.)-ethanol-water system
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Published:2021
Issue:
Volume:286
Page:02004
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ISSN:2267-1242
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Container-title:E3S Web of Conferences
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language:
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Short-container-title:E3S Web Conf.
Author:
Gandova Vanya,Tasheva Stanislava,Prodanova-Stefanova Vanya,Dobreva Krasimira,Dincheva Ivayla,Stoyanova Albena
Abstract
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).
Reference27 articles.
1. Bauer K., Garbe D., Surburg H., Common fragrance and flavor materials, Preparation, properties and uses, (fourth completely revised Edition, Weinheim, NewYork, Chichester, Brisbane, Singapore, Toronto, Wiley-VCH, 2001). 2. Baçer K.H.C., Buchbauer G., Handbook of essential oils: science, technology, and applications, (Taylor and Francis Group, 2010). 3. Georgiev E., Stoyanova A., A guide for the specialistin the aromatic industry. (UFT Acad. Publ. House, Plovdiv, Bulgaria, 2006). 4. Arce A., Marchiaro A., Soto A.. J. Sol. Chem., 33, 561, (2004). 5. Clara R., Gymez Marigliano A., Del Campos V., Sylimo H., Fluid Phase Equilibria, 293, 151, (2010).
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