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Liquid liquid equilibrium of model systems containing vegetable oil + aldehyde + anhydrous ethanol at 25 ºC

Grant number: 13/11868-1
Support type:Scholarships in Brazil - Master
Effective date (Start): November 01, 2013
Effective date (End): August 31, 2014
Field of knowledge:Engineering - Chemical Engineering
Principal researcher:Roberta Ceriani
Grantee:Perci Odilon Bonetti Homrich
Home Institution: Faculdade de Engenharia Química (FEQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:08/56258-8 - Phase equilibrium and purification processes in the production of biofuels and biocompounds, AP.BIOEN.TEM

Abstract

Sunflower oil has multiple applications, such as in the food industry, in medicine, in cosmetics, as lubricants. Besides,it is a source for bioenergy production. Oilseeds from plants are an attractive source of vegetable oil because they have a high mass content of oil (up to 60 w%). Sunflower represents the fourth largest agricultural productivity designed for use as oil source and has some advantages that include the high amount of linoleic acid (polyunsaturated fatty acid) and the presence of nutraceutical compounds, both related to benefits in human nutrition. The crude sunflower oil must be chemically refined to remove acidity and minor compounds to become edible. Basically, the chemical refining consists of four steps: degumming, deacidification, bleaching and deodorization. The deodorization step removes odoriferous compounds formed by oil oxidation, also contaminants as pesticides, by steam stripping under high temperatures (up to 265°C) and high vacuum. These extreme conditions degradate the oil and volatilize nutraceutical compounds (mainly, antioxidants), and also promote oxidation and cis-trans isomerization reactions of polyunsaturated fatty acids. In this context, this project has the aim for determining liquid-liquid equilibrium experimental data for model systems containing sunflower oil + aldehydes + anhydrous ethanol at 25°C, and correlating data by appropriate thermodynamic models. This alternative of processing will is suggested as a pre-treatment for the bleached sunflower oil, in order to permit a subsequent milder deodorization, working with lower temperatures, avoiding undesirable consequences in the quality of the final product (loss of nutraceuticals compounds, degradation and cis-trans isomerization reaction).

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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)
MAY, CAMILA P.; HOMRICH, PERCI O. B.; CERIANI, ROBERTA. Pseudoternary liquid-liquid equilibria for refined sunflower seed oil plus carboxylic acids plus anhydrous ethanol at 298.15 K. Fluid Phase Equilibria, v. 427, p. 297-302, NOV 15 2016. Web of Science Citations: 4.
HOMRICH, PERCI O. B.; CERIANI, ROBERTA. Liquid-Liquid Equilibrium Data for the Pseudoternary Model System of Refined Sunflower Seed Oil plus (n-Hexanal, or 2-Nonenal, or 2,4-Decadienal) plus Anhydrous Ethanol at 298.15 K. JOURNAL OF CHEMICAL AND ENGINEERING DATA, v. 61, n. 9, p. 3069-3076, SEP 2016. Web of Science Citations: 4.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
. Liquid-liquid equilibria for the model systems composed by sunflower seed oil + aldehydes + anhydrous ethanol at 25 °C under atmospheric pressure. 2015. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Química.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.