Supercritical CO2 extraction of essential oils from Thymus vulgaris
Supercritical CO2 extraction of essential oil from Thymus vulgaris leaves was studied using experimental data recently obtained in the Florys S.p.A. laboratory. Mass transfer coefficients in the supercritical and solid phases from extraction curves at 40°C and 20 MPa were evaluated using a mathemati...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2000 |
| País: | Brasil |
| Institución: | Universidade Federal da Bahia (UFBA) |
| Repositorio: | Repositório Institucional da UFBA |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.ufba.br:ri/7063 |
| Acceso en línea: | http://www.repositorio.ufba.br/ri/handle/ri/7063 |
| Access Level: | acceso abierto |
| Palabra clave: | Mathematical modeling Supercritical CO2 extraction Essential oils Thymus vulgaris |
| Sumario: | Supercritical CO2 extraction of essential oil from Thymus vulgaris leaves was studied using experimental data recently obtained in the Florys S.p.A. laboratory. Mass transfer coefficients in the supercritical and solid phases from extraction curves at 40°C and 20 MPa were evaluated using a mathematical model based on the local adsorption equilibrium of essential oil on lipid in leaves. The adsorption equilibrium constant was fitted to these experimental data, and internal and external mass transfer resistances were calculated, allowing identification of the mechanism controlling the extraction process. |
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