RT journal article
T1 An Evaluation of the Equilibrium Properties in Hexane and Ethanol Extractive Systems for Moringa oleifera Seeds and Fatty Acid Profiles of the Extracts
A1 Arguelles-Peña, Karina
A1 Olguín-Rojas, José Arturo
A1 Acosta-Osorio, Andrés Antonio
A1 Carrera Fernández, Ceferino Adrián
A1 Fernández Barbero, Gerardo
A1 Garcia Alvarado, Miguel Angel
A1 Rodríguez-Jimenes, Guadalupe del Carmen
A2 Química Analítica
K1 equilibrium properties
K1 multi-stage extraction
K1 Moringa seed
AB Until the present, oilseed extractions have been mainly performed using hexane: a toxic, non-sustainable solvent. Extraction methods using ethanol have recently been proposed and, to evaluate the suitability of ethanol as an alternative solvent, Moringa seeds with an oil content as high as 40% have been chosen to determine the equilibrium properties in solid-liquid ethanol extractions. The equilibrium constant (K-eq) and the specific retained solution (M) of the extractive systems seeds-oil-hexane and seeds-oil-ethanol were determined and validated, following a countercurrent multi-stage extraction model. The extractions were carried out at 40 and 50 degrees C, the mass to solvent ratios used were 1:5, 1:10 and 1:20, and shelled and unshelled seeds (kernels) were tested. The K-eq and M of the different kinetics revealed that K-eq was not infinite in the hexane systems, whereas the ethanol systems registered slightly lower values. Regarding M, although the seed powder allowed more rapid extractions, particle size was increased to reduce M for an easier phase preparation. Finally, a counter-current multi-stage extraction system was simulated and applied under suitable conditions. The fatty acid profiles for both types of extract were similar regarding their main components. definition:
PB MDPI
SN 2297-8739
YR 2021
FD 2021-11
LK http://hdl.handle.net/10498/27262
UL http://hdl.handle.net/10498/27262
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 05-nov-2026