Lauric Acid Rich Oil Supercritical Extraction and Methodology to Predict Solubility (original) (raw)

Food and Public Health, 2016

Abstract

The seeds of Elaeis guineensis were submitted to extraction with supercritical carbon dioxide (CO2) in a fixed bed. The extraction experiments were carried out in a supercritical extraction pilot plant at pressures between 15 and 25 MPa and temperatures of 318 and 323 K. The extracts were analyzed by gas chromatography to evaluate the fatty acid composition profile. The extraction results show that the maximum extraction yield was achieved at 25 MPa and 323 K. The Peng-Robinson equation of state was used to predict the solubility of the vegetable oil (extract) in carbon dioxide. The van der Waals mixing rule with two binary interaction parameters was used. The influence of the system initial composition on solubility was studied. For this purpose, the gas-liquid equilibrium was predicted for a multicomponent mixture of fatty acids and carbon dioxide. The oil (extract) was assumed to be formed by the mixture of fatty acids. The gas-liquid equilibrium predicted was compared with the p...

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