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Study of liquid-liquid equilibrium of the systems composed by components of allspice essential oil and alcoholic solvent

Grant number: 12/15323-7
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): September 01, 2012
Effective date (End): August 31, 2013
Field of knowledge:Agronomical Sciences - Food Science and Technology - Food Engineering
Principal researcher:Christianne Elisabete da Costa Rodrigues
Grantee:Thayla Karla Umeda
Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil


Brazil stands out as one of the largest producers of essential oil and such fact is due to high biological diversity of the country. In relation to the application fields, the essential oils are very versatile once they can be inserted in the branches of food, pharmaceutical, cosmetic and others. The essential oils mainly behave as flavoring agents having also medicinal and functional capacity.Terpene hydrocarbons and oxygenated compounds are the main constituents of essential oil and the fragrance of it is attributed, mainly to oxygenated compounds. The terpene hydrocarbons, in addition to not contributing effectively to the sensory characteristics of the oil, degrade in the presence of light, oxygen and heat, producing unpleasant odors. In order to improve the quality and stability of the oil, the oxygenated compounds should be concentrated by the partial removal of terpene hydrocarbons, being this method known industrially as deterpenation. Several methods are proposed for the deterpenation of essential oils, among which are: supercritical fluid extraction, membrane separation, steam distillation, vacuum and molecular distillations, selective inclusion and liquid-liquid extraction.In this undergraduate research project, liquid-liquid equilibrium data of model systems composed by beta-caryophyllene, methyl eugenol, eugenol (compounds commonly found in the allspice - Pimenta dioica - 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 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
(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.
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.
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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