RT Journal Article
T1 The Selective Supercritical Extraction of High-value Fatty Acids from Tetraselmis suecica using the Hansen Solubility Theory
A1 Tirado, Diego
A1 Rousset, Amandine
A1 Calvo Garrido, María Lourdes
AB The aim of this work was to test the utility of the Hansen theory to predict the best cosolvent for supercritical carbon dioxide (sc-CO2) to reach the selective extraction of fatty acids from Tetraselmis suecica. The order in the cosolvent power was established with five organic solvents used in food production: acetone, diethyl ether, ethanol, n-hexane and methanol. Predictions focused on the selective extraction of oleic, linoleic and α-linolenic acid. The cosolvent power depended on the fatty acid, but in general, the best cosolvent for the three target compounds was ethanol. Predictions were validated through equilibrium data and extraction yields from T. suecica. Operating at 305.15 K and 20 MPa, the extracted oil with the sc-CO2-ethanol (5 % mass fraction) mixture significantly improved the content of the target fatty acids compared with pure sc-CO2; e.g. the α-linolenic acid content was 16 % in the oil obtained with pure sc-CO2 while it was 25 % in the oil obtained with sc-CO2 + 5 % ethanol. However, the Hansen theory predicted that the miscibility enhancement of the fatty acids caused by increasing ethanol concentrations in the supercritical solvent mixture was not progressive. In fact, at high pressures and high ethanol concentrations, it was predicted up to less than half the miscibility enhancement.
PB The Italian Association of Chemical Engineering
SN 978-88-95608-72-3
SN 2283-9216
YR 2019
FD 2019
LK https://hdl.handle.net/20.500.14352/97303
UL https://hdl.handle.net/20.500.14352/97303
LA eng
NO Tirado D.F., Rousset A., Calvo L., 2019, The Selective Supercritical Extraction of High-value Fatty Acids from Tetraselmis Suecica Using the Hansen Solubility Theory, Chemical Engineering Transactions, 75, 133-138.
NO Department of Bolivar (Colombia)
DS Docta Complutense
RD 5 oct 2024