Citation
Abstract
Supercritical carbon dioxide (SC-CO2) was used to extract oil from tiger nuts and the physicochemical properties and the impact of extraction conditions [i.e., temperature (40 °C–80 °C), pressure (20–40 MPa) and time (60–360 min)] on the oil yield were studied. The response surface analysis results revealed that the oil yield was significantly (P < 0.05) influenced by the main effect of the extraction pressure, extraction time and their quadratic effects respectively. However, the interaction between the extraction temperature and time had no significant (P > 0.05) effect on the oil yield. The highest oil yield was 26.28 g/100 g sample after 210 min of extraction time at 30.25 MPa and 60 °C respectively. The fatty acid composition of oils obtained by SC-CO2 and Soxhlet showed marked variation. Also, the fatty acid composition varied depending on the operating conditions. The viscosity of the oil decreased with the increase in temperature.
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Additional Metadata
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Food Science and Technology |
| DOI Number: | https://doi.org/10.1016/j.lwt.2012.01.021 |
| Publisher: | Elsevier |
| Keywords: | Tiger nut oil; Super critical carbon dioxide; RSM; Fatty acids. |
| Depositing User: | Nur Farahin Ramli |
| Date Deposited: | 09 Oct 2013 08:49 |
| Last Modified: | 09 Oct 2013 08:49 |
| Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.lwt.2012.01.021 |
| URI: | http://psasir.upm.edu.my/id/eprint/24183 |
| Statistic Details: | View Download Statistic |
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