| Journal: | Brazilian journal of chemical engineering |
| Database: | PERIÓDICA |
| System number: | 000309079 |
| ISSN: | 0104-6632 |
| Authors: | Zacchi, P1 Daghero, J2 Jaeger, P Eggers, R |
| Institutions: | 1Technische Universität Hamburg, Hamburgo. Alemania 2Universidad Nacional de Río Cuarto, Facultad de Ingeniería, Río Cuarto, Córdoba. Argentina |
| Year: | 2006 |
| Season: | Mar |
| Volumen: | 23 |
| Number: | 1 |
| Pages: | 105-110 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Wheat germ oil was obtained by mechanical pressing using a small-scale screw press and by supercritical extraction in a pilot plant. With this last method, different pressures and temperatures were tested and the tocopherol concentration in the extract was monitored during extraction. Then supercritical extracted oil as well as commercial pressed oil were deacidified in a countercurrent column using supercritical carbon dioxide as solvent under different operating conditions. Samples of extract, refined oil and feed oil were analyzed for free fatty acids (FFA) and tocopherol contents. The results show that oil with a higher tocopherol content can be obtained by supercritical extraction-fractionation and that FFA can be effectively removed by countercurrent rectification while the tocopherol content is only slightly reduced |
| Disciplines: | Química |
| Keyword: | Química de alimentos, Aceite de germinado de trigo, Extracción supercrítica, Dióxido de carbono, Tocoferol, Acidos grasos libres |
| Keyword: | Chemistry, Food chemistry, Wheat germ oil, Supercritical extraction, Carbon dioxide, Tocopherol, Free fatty acids |
| Full text: | Texto completo (Ver HTML) |
