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

Autor(es)

Goncalves, Daniel ; Costa, Patricia ; Rodrigues, Christianne E. C. ; Rodrigues, Alirio E.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF CHEMICAL THERMODYNAMICS; v. 108, p. 118-126, MAY 2017.
• Citações Web of Science: 6

Resumo

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)

• Processo FAPESP: 15/06162-8 - Predição das características aromatizantes das fases provenientes do fracionamento de óleos essenciais cítricos utilizando misturas de etanol e água como solventes
• Beneficiário: Daniel Gonçalves
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 13/11150-3 - Fracionamento de óleos essenciais cítricos utilizando etanol com diferentes níveis de hidratação como solventes: equilíbrio de fases, propriedades físicas e extração em equipamento contínuo
• Beneficiário: Daniel Gonçalves
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 11/02476-7 - Desterpenação de óleos essenciais por extração líquido-líquido: estudo experimental e simulação do processo
• Beneficiário: Christianne Elisabete da Costa Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Regular