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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Fractionation of orange essential oil using liquid-liquid extraction: Equilibrium data for model and real systems at 298.2 K

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Goncalves, Daniel [1] ; Teschke, Martin E. E. [1] ; Koshima, Cristina C. [1] ; Goncalves, Cintia B. [1] ; Oliveira, Alessandra L. [2] ; Rodrigues, Christianne E. C. [1]
Total Authors: 6
[1] Dept Food Engn ZEA FZEA, Separat Engn Lab LES, Sao Paulo - Brazil
[2] Univ Sao Paulo, Dept Food Engn ZEA FZEA, Nat Prod & High Pressure Technol Lab LTAPPN, BR-13635900 Pirassununga, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Fluid Phase Equilibria; v. 399, p. 87-97, AUG 15 2015.
Web of Science Citations: 16

Essential oils have many industrial applications and are basically composed of terpene hydrocarbons and oxygenated compounds. To improve their stability, sensorial quality, flavoring capacity and, consequently, their commercial value, the removal of hydrocarbon compounds is achieved by a fractionation process that can be performed by liquid-liquid extraction. In this work, a phase equilibrium study of real systems composed of crude orange essential oil and hydroalcoholic solvents (ethanol and water mixtures) was conducted and UNIQUAC and NRTL binary interaction parameters available in the literature were tested without success for the description of phase compositions. To obtain reliable parameters that provide a good description of the phase composition and can be used for computational simulation, liquid-liquid equilibrium data for model systems composed of limonene, linalool, ethanol and water at 298.2 K were determined and used to adjust new binary interaction parameters of UNIQUAC and NRTL thermodynamic models. Concerning the physical-chemical behavior of the system, the increase in the water content of solvent was observed to promote a decrease in the migration of oxygenated compounds to the solvent-rich phase and in the mutual solubility of the compounds. The increase in the composition of the oxygenated compounds in the system resulted in an increased solubility of these oxygenated compounds and a consequent decreased solvent selectivity. The new set of parameters provided a satisfactory representation of the experimental data, with global deviations of up to a 0.0031 mass fraction in the prediction process, which indicates that these parameters may be very useful in the optimization of the fractionation process by computational simulation. (c) 2015 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/11150-3 - Citrus essential oils fractionation using ethanol with different water contents as solvents: phase equilibrium, physical properties and continuous equipment extraction
Grantee:Daniel Gonçalves
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 10/13286-1 - Study of Deterpenation Process of Citrus Essential Oils: Liquid-liquid Equilibrium Data and Extraction in Perforated Rotating Discs Contactor
Grantee:Daniel Gonçalves
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 11/02476-7 - Essential oils deterpenation by solvent extraction: experimental study and process simulation
Grantee:Christianne Elisabete da Costa Rodrigues
Support Opportunities: Regular Research Grants
FAPESP's process: 10/20789-0 - Deterpenation of essential oils by liquid-liquid extraction using a perforated rotating disc column: experimental study and process simulation
Grantee:Cristina Chiyoda Koshima
Support Opportunities: Scholarships in Brazil - Doctorate