Integrated membrane process in organic media: combining organic solvent ultrafiltration, nanofiltration, and reverse osmosis to purify and concentrate the phenolic compounds from wet olive pomace.
[EN] Phenolic compounds from a hydroalcoholic extract of wet olive pomace were purified and concentrated by an integrated membrane process in organic media. First, UF010104 (Solsep BV) and UP005 (Microdyn Nadir) membranes were tested to be implemented in the ultrafiltration stage, with the aim of pu...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/220390 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/220390 |
| Access Level: | acceso abierto |
| Palabra clave: | Phenolic compounds Organic solvent ultrafiltration Organic solvent nanofiltration Reverse osmosis Integrated process Ethanol 06.- Garantizar la disponibilidad y la gestión sostenible del agua y el saneamiento para todos 09.- Desarrollar infraestructuras resilientes, promover la industrialización inclusiva y sostenible, y fomentar la innovación 12.- Garantizar las pautas de consumo y de producción sostenibles |
| Sumario: | [EN] Phenolic compounds from a hydroalcoholic extract of wet olive pomace were purified and concentrated by an integrated membrane process in organic media. First, UF010104 (Solsep BV) and UP005 (Microdyn Nadir) membranes were tested to be implemented in the ultrafiltration stage, with the aim of purifying the extract and obtaining a permeate enriched in phenolic compounds. Despite the high flux observed with the UF010104 membrane (20.4 ± 0.7 L·h¿1·m¿2, at 2 bar), the UP005 membrane was selected because of a more suitable selectivity. Even though some secoiridoids were rejected, the permeate stream obtained with this embrane contained high concentrations of valuable simple phenols and phenolic acids, whereas sugars and macromolecules were retained. Then, the ultrafiltration permeate was ubjected to a nanofiltration step employing an NF270 membrane (DuPont) for a further purification and fractionation of the phenolic compounds. The permeate flux was 50.2 ± 0.2 L·h¿1·m¿2, working at 15 ar. Hydroxytyrosol and some phenolic acids (such as vanillic acid, caffeic acid, and ferulic acid) were recovered in the permeate, which was later concentrated by reverse osmosis employing an F90 membrane. The permeate flux obtained with this membrane was 15.3 ± 0.3 L·h¿1·m¿2. The concentrated phenolic mixture that was obtained may have important applications as a powerful ntioxidant and for the prevention of diabetes and neurodegenerative diseases. |
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