Use of Hansen solubility parameters to select supercritical carbon dioxide cosolvents for improved extraction selectivity: Case study on green tea decaffeination

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dc.catalogadordfo
dc.contributor.authordel Valle Lladser, José Manuel
dc.contributor.authorCuellar Alvarez, Laura María
dc.contributor.authorCanales Muñoz, Roberto Ivan
dc.contributor.authorde la Fuente, Juan C.
dc.contributor.authorNúñez, Gonzalo A.
dc.date.accessioned2025-03-21T11:50:10Z
dc.date.available2025-03-21T11:50:10Z
dc.date.issued2025
dc.description.abstractThis study explores the selective decaffeination of green tea using supercritical (SC) CO 2 modified with ethanol and/or water as cosolvents based on experimental data in eight manuscripts in literature. We analyzed the solubility trends of caffeine (data from three literature sources) and epigallocatechin-3-gallate (EGCg) (data from a single source) using the Hansen solubility parameter (HSP) model to evaluate the solute-solvent interactions through the distance parameter R. We identified that the highest selectivity (favoring caffeine removal and EGCg retention) occurred at 70 ◦ extraction C and ≥25 MPa using pure CO 2 and hypothesized that the addition of water facilitated substrate swelling and improved inner mass transfer. Ethanol showed limited benefits at higher pressures. Data for operational solubility were more in line with actual solubility than apparent solubility, although both were still dependent on substrate-solute interactions. Solubility measurements revealed a significant scatter in the data, particularly for caffeine in water- and/or ethanol-modified CO 2 , underscoring the need for better experimentally derived data. Despite these challenges, HSP-based approaches effectively identified conditions that maximized selective decaffeination while preserving EGCg content.
dc.fuente.origenORCID
dc.identifier.doi10.1016/j.jfoodeng.2025.112538
dc.identifier.urihttps://doi.org/10.1016/j.jfoodeng.2025.112538
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/102909
dc.information.autorucEscuela de Ingeniería; Del Valle Lladser Jose Manuel; S/I; 57259
dc.information.autorucEscuela de Ingeniería; Cuellar Alvarez Laura Maria; S/I; 1101929
dc.information.autorucEscuela de Ingeniería; Canales Munoz Roberto Ivan; 0000-0002-2535-6527; 1039369
dc.language.isoen
dc.nota.accesoContenido parcial
dc.rightsacceso restringido
dc.subject.ddc510
dc.subject.deweyMatemática física y químicaes_ES
dc.subject.ods09 Industry, innovation and infrastructure
dc.subject.odspa09 Industria, innovación e infraestructura
dc.titleUse of Hansen solubility parameters to select supercritical carbon dioxide cosolvents for improved extraction selectivity: Case study on green tea decaffeination
dc.typeartículo
dc.volumen396
sipa.codpersvinculados57259
sipa.codpersvinculados1101929
sipa.codpersvinculados1039369
sipa.trazabilidadORCID;2025-03-03
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