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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.)

Liquid-liquid equilibrium of rosemary model essential oil (alpha-pinene plus eucalyptol plus camphor) and solvent (ethanol plus water) at room conditions

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Goncalves, Daniel [1, 2] ; Panzarin, Camila [1] ; Goncalves, Cintia Bernardo [1] ; da Costa Rodrigues, Christianne Elisabete [1]
Total Authors: 4
[1] Univ Sao Paulo, Dept Engn Alimentos ZEA FZEA, Separat Engn Lab LES, POB 23, BR-13635900 Pirassununga, SP - Brazil
[2] Univ Estadual Campinas UNICAMP, Dept Engn Alimentos DEA FEA, Lab Extract Appl Thermodynam & Equilibrium ExTrAE, POB 6121, BR-13083862 Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Fluid Phase Equilibria; v. 521, OCT 15 2020.
Web of Science Citations: 0

Rosemary essential oil is composed of key components used in pharmaceutical and cosmetics products worldwide. Among several components found in rosemary essential oil, it can be simplified by a mixture of alpha-pinene, eucalyptol, and camphor. Aiming an enhanced product quality, the separation of eucalyptol and camphor from alpha-pinene was evaluated employing ethanol + water mixtures as solvents. For that, liquid-liquid equilibrium data of systems composed of alpha-pinene + eucalyptol + camphor + ethanol + water at T = (298.2 +/- 0.1) K were thus assessed. Thermophysical properties of the phases from the equilibrium as density, viscosity, surface tension, and interfacial tension were also evaluated. Increased water amount in the solvent caused decreased distribution coefficients, but higher solvent selectivity and thermophysical properties. Increased oxygenated compounds in the terpene phase also led to enhanced density and viscosity values, but lower solvent selectivity and interfacial tension. Binary interaction parameters of the NRTL adjusted to the experimental data and empirical equations described satisfactorily the phases compositions and thermophysical properties, with relative deviations of 0.73% for NRTL, 0.006% for density, 0.22% for viscosity, 5.78% for surface tension, and 5.88% for interfacial tension. (C) 2020 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 18/13207-6 - Extraction and computational simulation of ethanolic biodiesel production from peanut oil
Grantee:Daniel Gonçalves
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/21252-0 - Equilibrium and production processes of biofuels and bioproducts
Grantee:Antonio José de Almeida Meirelles
Support type: Research Projects - Thematic Grants
FAPESP's process: 17/20840-4 - Valorization of agroindustrial coproducts through obtaining vegetable oils and minority compounds by extraction with solvents
Grantee:Christianne Elisabete da Costa Rodrigues
Support type: Regular Research Grants
Grantee:Cintia Bernardo Gonçalves
Support type: Regular Research Grants
FAPESP's process: 18/18919-4 - Physico-chemical behavior of systems composed of rosemary essential oil, ethanol and water, at 25 °c
Grantee:Camila Panzarin
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales
Grantee:Roberto de Campos Giordano
Support type: Program for Research on Bioenergy (BIOEN) - Thematic Grants