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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Deacidification of Amazonian Pracaxi (Pentaclethra macroloba) and Patawa (Oenocarpus bataua) oils: experimental and modeling of liquid-liquid extraction using alcoholic solvents

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Author(s):
Pereira, Ericsem [1] ; Pereira, Debora Tamires Vitor [1] ; Ferreira, Marcela C. [2] ; Martinez, Julian [1] ; Meirelles, Antonio J. A. [1] ; Maximo, Guilherme J. [1]
Total Authors: 6
Affiliation:
[1] Univ Estadual Campinas, Sch Food Engn, Monteiro Lobato St 80, BR-13083862 Sao Paulo - Brazil
[2] Univ Estadual Campinas, Sch Technol, Pascoal Marmo St 1888, BR-13484332 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Brazilian Journal of Chemical Engineering; v. 37, n. 4 JUL 2020.
Web of Science Citations: 0
Abstract

This paper presents a study about the deacidification of typical Amazonian oils, namely, patawa and pracaxi oils. The liquid-liquid extractions were carried out using three alcoholic solvents: anhydrous ethanol, azeotropic ethanol, and azeotropic isopropanol at 298.15 K and atmospheric pressure. Liquid-liquid equilibrium data for the oils + oleic acid + solvents systems were determined. The azeotropic ethanol was found to be the best extractant for removing free fatty acids (FFAs) since its use provided the highest selectivity values (from 62.98 to more 1.53 x 10(3)), reasonable distribution coefficients (from 1.06 to 1.47), and reduced loss of neutral oil (oil concentrations lower than 1.49 wt% in the alcoholic phases). Moreover, the obtained experimental data were correlated using the nonrandom two-liquid (NRTL) and universal quasi chemical (UNIQUAC) activity coefficient models. The deviations between calculated and experimental values ranged from 0.39 to 1.22 and from 0.28 to 1.10 for the various studied systems using the UNIQUAC and the NRTL models, respectively. Such results indicate the positive perspective of using the liquid-liquid extraction technique for patawa and pracaxi oils refining and the feasibility of using ethanol as an FFA extractant. (AU)

FAPESP's process: 14/21252-0 - Equilibrium and production processes of biofuels and bioproducts
Grantee:Antonio José de Almeida Meirelles
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/16979-7 - Development of predictive methodologies for calculating physical and equilibrium properties and simulation of fluid dynamics behavior of fats and oils during the digestive process
Grantee:Ericsem Pereira
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 18/15737-2 - Passion fruit rind biorefinery: extraction of pectin and bioactive compounds and concentration of the extract with membranes
Grantee:Débora Tamires Vitor Pereira
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 16/08566-1 - Phase equilibrium thermodynamics for the improvement of physical properties of food bioproducts and their prediction in industrial and digestive processes
Grantee:Guilherme José Maximo
Support Opportunities: Regular Research Grants
FAPESP's process: 17/23670-2 - Biorefinery for the recovery of by-products from passion fruit processing through high pressure technologies
Grantee:Julian Martínez
Support Opportunities: Regular Research Grants