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Liquid-liquid equilibrium data of systems composed by bergamot essential oil and alcoholic solvents

Grant number: 12/15317-7
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): October 01, 2012
Effective date (End): September 30, 2013
Field of knowledge:Agronomical Sciences - Food Science and Technology - Food Engineering
Principal researcher:Christianne Elisabete da Costa Rodrigues
Grantee:Karina Thiemi Nakamoto
Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil


Essential oils are complex mixtures consisting of hydrocarbons and oxygenated terpenes. The increase in consumer preference for natural essences combined with the numerous applications of essential oils in industrial sectors have levered their marketing. Although oxygenated terpenes are present in smaller amounts in most essential oils, these compounds are the mainly responsible for presenting the oil sensory characteristics such as flavor and aroma. In addition to do not contribute effectively to the sensory characteristics of the essential oil, the terpene hydrocarbons degrade in the presence of light, oxygen and heat, producing unpleasant odors. Thus, it is desirable to remove partly the terpene hydrocarbons from the essential oil to obtain a more stable product with higher quality and value - process known as deterpenation. Several methods are proposed in literature for deterpenation of essential oils, among them the method of liquid-liquid extraction, which uses low temperatures under atmospheric pressure. This undergraduate research project aims to study the phase equilibria related to compounds found in the process of deterpenation of bergamot essential oil by liquid-liquid extraction, using hydrous ethanol as a solvent.In this undergraduate research project, liquid-liquid equilibrium data of real systems composed by bergamot essential oil and mixed solvent (ethanol with different water contents) will be experimentally determined at 25.0 ± 0.1 °C. Additionally, physical properties (viscosity and density) of the phases coming from the equilibrium study, as well as the alcoholic solvents and essential oil of bergamot, will be also evaluated.It is worth mentioning that this undergraduate research project is associated with the Research Support Project nº 2011/02476-7, coordinated by the Advisor of this proposal.

Scientific publications (5)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
KOSHIMA, CRISTINA C.; GONCALVES, DANIEL; NAKAMOTO, KARINA T.; UMEDA, THAYLA K.; GONCALVES, CINTIA B.; RODRIGUES, CHRISTIANNE E. C. Physical Properties of Model and Real Systems Composed of Essential Oils and Hydroalcoholic Solvents at 298.2 K and Atmospheric Pressure. JOURNAL OF CHEMICAL AND ENGINEERING DATA, v. 64, n. 5, SI, p. 1873-1884, MAY 2019. Web of Science Citations: 0.
GONCALVES, DANIEL; KOSHIMA, CRISTINA CHIYODA; MIGUEL BATISTA, FABIO RODOLFO; DA COSTA RODRIGUES, CHRISTIANNE ELISABETE. Performance of continuous countercurrent extractor on the fractionation of Citrus bergamia essential oil using ethanol/water mixtures as solvents. CHEMICAL ENGINEERING RESEARCH & DESIGN, v. 137, p. 566-576, SEP 2018. Web of Science Citations: 0.
KOSHIMA, CRISTINA C.; UMEDA, THAYLA K.; NAKAMOTO, KARINA T.; VENANCIO, LARISSA L.; ARACAVA, KEILA K.; RODRIGUES, CHRISTIANNE E. C. (Liquid plus liquid) equilibrium for systems composed of clove and allspice essential oil compounds and hydrous ethanol at T=298.2 K. JOURNAL OF CHEMICAL THERMODYNAMICS, v. 95, p. 54-62, APR 2016. Web of Science Citations: 8.
KOSHIMA, CRISTINA C.; NAKAMOTO, KARINA T.; ARACAVA, KEILA K.; OLIVEIRA, ALESSANDRA L.; RODRIGUES, CHRISTIANNE E. C. Fractionation of Bergamot and Lavandin Crude Essential Oils by Solvent Extraction: Phase Equilibrium at 298.2 K. JOURNAL OF CHEMICAL AND ENGINEERING DATA, v. 60, n. 1, p. 37-46, JAN 2015. Web of Science Citations: 13.
GONCALVES, DANIEL; KOSHIMA, CRISTINA CHIYODA; NAKAMOTO, KARINA THIEMI; UMEDA, THAYLA KARLA; ARACAVA, KEILA KAZUE; GONCALVES, CINTIA BERNARDO; DA COSTA RODRIGUES, CHRISTIANNE ELISABETE. Deterpenation of eucalyptus essential oil by liquid plus liquid extraction: Phase equilibrium and physical properties for model systems at T=298.2 K. JOURNAL OF CHEMICAL THERMODYNAMICS, v. 69, p. 66-72, FEB 2014. Web of Science Citations: 15.

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