| Journal: | Brazilian journal of chemical engineering |
| Database: | PERIÓDICA |
| System number: | 000309097 |
| ISSN: | 0104-6632 |
| Authors: | Steffani, E1 Atti-Santos, A.C2 Atti-Serafini, L Pinto, L.T3 |
| Institutions: | 1Universidade de Caxias do Sul, Centro de Ciencias Exatas e Tecnologia, Caxias do Sul, Rio Grande do Sul. Brasil 2Universidade de Caxias do Sul, Instituto de Biotecnologia, Caxias do Sul, Rio Grande do Sul. Brasil 3Universidade Federal de Santa Catarina, Centro Tecnologico, Florianopolis, Santa Catarina. Brasil |
| Year: | 2006 |
| Season: | Jun |
| Volumen: | 23 |
| Number: | 2 |
| Pages: | 259-266 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Supercritical CO2 extraction of essential oil from the leaves of a variety of camphor tree known as Ho-Sho was studied. Experiments were carried out within the following ranges: CO2 flow rate (1 - 4 mL/min); pressure (80 - 100 bar); temperature (40 - 60 ºC) and particle size (0.37 - 1.0 mm). The equipment used was an HP 8670 T extractor module with an extraction cell volume of 7 mL. Two mathematical models of the process were proposed. Model 1 was a modified version of the traditional shrinking core model with effective diffusivity and the external mass transfer coefficient as the fitting parameters. Model 2 used an additional kinetic parameter based on an Arrhenius-like expression. Both models took into account the cell pressurization step. The best fit between the extraction model curves and the experimental data was obtained using model 2 |
| Disciplines: | Química |
| Keyword: | Fitoquímica, Aceites esenciales, Extracción supercrítica, Cinnamomum camphora, Linaloolifera fujita |
| Keyword: | Chemistry, Phytochemistry, Essential oils, Supercritical extraction, Cinnamomum camphora, Linaloolifera fujita |
| Full text: | Texto completo (Ver HTML) |
