Supercritical concentration of ethyl laurate from coconut oil
Countercurrent extractions with supercritical carbon dioxide (SCCO2) were carried out to fractionate ethyl laurate (EL) from a fatty acid ethyl ester (FAEE) mixture obtained by ethanolysis of coconut oil. The effect of pressure (9–14 MPa), temperature (40–70 °C) and CO2 flow rate (30–70 g/min) on th...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/750541 |
| Acceso en línea: | https://hdl.handle.net/10486/750541 https://dx.doi.org/10.1016/j.lwt.2025.117928 |
| Access Level: | acceso abierto |
| Palabra clave: | Coconut oil ethyl laurate fatty acid ethyl esters fractionation supercritical fluid extraction Química |
| Sumario: | Countercurrent extractions with supercritical carbon dioxide (SCCO2) were carried out to fractionate ethyl laurate (EL) from a fatty acid ethyl ester (FAEE) mixture obtained by ethanolysis of coconut oil. The effect of pressure (9–14 MPa), temperature (40–70 °C) and CO2 flow rate (30–70 g/min) on the purity of ethyl laurate (EL-P) and long-chain saturated fatty acid ethyl esters (LCSFA-P) were investigated and modeled by Response Surface Methodology. Pressure had a positive effect on both responses. Higher temperatures led to larger EL-P, but lower LCSFA-P in the extracts. SCCO2 flow rate was only significant for EL-P and there was an interaction effect with temperature (highest EL-P achieved at the highest temperature and flow rate). The optimum experimental condition to reach a high EL-P and low LCSFA-P was 13 MPa, 70 °C and 70 g/min. The experimental EL-P and LCSFA-P achieved at that condition was 59.6 % and 14.2 %, respectively. The use of SCCO2 in a countercurrent column demonstrated to be a suitable technique that allowed obtaining an extract with an EL-P 20 % higher (enrichment factor of 1.2) and a LCSFA-P 50 % lower than those of the coconut oil used as feed. In addition, an EL recovery of 83.9 % was achieved |
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