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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 acid lime essential oil using ethanol/water mixtures: Effect of the process on the aroma profile

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Goncalves, Daniel ; Costa, Patricia ; Rodrigues, Christianne E. C. ; Rodrigues, Alirio E.
Total Authors: 4
Document type: Journal article
Source: JOURNAL OF CHEMICAL THERMODYNAMICS; v. 108, p. 118-126, MAY 2017.
Web of Science Citations: 6

This study aims to separate aroma-active components of the crude Citrus latifolia essential oil (EO) from the unstable terpene hydrocarbons using ethanol/water mixtures through liqUid-liquid equilibrium (LLE) and to evaluate the aroma profiles of the crude EO and the LLE phases. For this purpose, the liquid compositions of the crude EOs and the LLE phases were found by gas chromatography analysis. The compositions of the liquid phases were predicted using the NRTL model and compared to the experimental data. Afterwards, the concentrations of the components in the vapour phases above the liquid mixtures were obtained by headspace analysis and the odour intensity of each component was estimated using the Stevens' power law concept. Finally, the classification into olfactory families was evaluated through the Perfumery Radar methodology:The solvent extraction technique made it possible to obtain extract phases enriched in citral and poor in monoterpenes, with aromas profiles similar to that of the crude EO and classified as herbaceous and citrus scent, with floral, woody, and oriental nuances. The extract phase obtained from ethanol with 50% water was found to be a promising fraction for industrial applications. Furthermore, the results proved that the NRTL parameters can be efficiently used to predict the compositions of the phases from the LLE. (C) 2017 Elsevier Ltd. (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 type: Scholarships in Brazil - Doctorate
FAPESP's process: 11/02476-7 - Essential oils deterpenation by solvent extraction: experimental study and process simulation
Grantee:Christianne Elisabete da Costa Rodrigues
Support type: Regular Research Grants
FAPESP's process: 15/06162-8 - Prediction of flavor characteristics of the phases from citrus essential oils fractionation using ethanol and water mixtures as solvents
Grantee:Daniel Gonçalves
Support type: Scholarships abroad - Research Internship - Doctorate