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Extraction of oil from tiger nut (Cyperus esculentus L.) with supercritical carbon dioxide (SC-CO2).


Olusegun, Lasekan and Mohammed, Abdulkarim Sabo (2012) Extraction of oil from tiger nut (Cyperus esculentus L.) with supercritical carbon dioxide (SC-CO2). LWT - Food Science and Technology, 47 (2). 287 - 292. ISSN 0023-6438


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
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