The Selective Supercritical Extraction of High-value Fatty Acids from Tetraselmis suecica using the Hansen Solubility Theory

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dc.contributor.authorTirado, Diego
dc.contributor.authorRousset, Amandine
dc.contributor.authorCalvo Garrido, María Lourdes
dc.date.accessioned2024-01-31T15:51:49Z
dc.date.available2024-01-31T15:51:49Z
dc.date.issued2019
dc.description.abstractThe 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.
dc.description.departmentDepto. de Ingeniería Química y de Materiales
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.sponsorshipDepartment of Bolivar (Colombia)
dc.description.statuspub
dc.identifier.citationTirado 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.
dc.identifier.doi10.3303/CET1975023
dc.identifier.isbn978-88-95608-72-3
dc.identifier.issn2283-9216
dc.identifier.officialurlhttps://doi.org/10.3303/CET1975023
dc.identifier.urihttps://hdl.handle.net/20.500.14352/97303
dc.journal.titleChemical Engineering Transactions
dc.language.isoeng
dc.page.final138
dc.page.initial133
dc.publisherThe Italian Association of Chemical Engineering
dc.rights.accessRightsopen access
dc.subject.cdu66
dc.subject.ucmCiencias
dc.subject.unesco3303 Ingeniería y Tecnología Químicas
dc.titleThe Selective Supercritical Extraction of High-value Fatty Acids from Tetraselmis suecica using the Hansen Solubility Theory
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number75
dspace.entity.typePublication
relation.isAuthorOfPublicationf2587cb3-725d-4333-90ba-d4aac12ec04c
relation.isAuthorOfPublication.latestForDiscoveryf2587cb3-725d-4333-90ba-d4aac12ec04c
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