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Canola oil extracted by supercritical carbon dioxide and a commercial organic solvent
Author(s) -
Jenab Ehsan,
Rezaei Karamatollah,
EmamDjomeh Zahra
Publication year - 2006
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/ejlt.200600026
Subject(s) - chemistry , unsaponifiable , supercritical carbon dioxide , canola , iodine value , extraction (chemistry) , erucic acid , solvent , solubility , oleic acid , iodine , chromatography , behenic acid , fatty acid , food science , organic chemistry , palmitic acid , biochemistry
Samples of crushed and cooked canola seeds (Okapy Double Zero) were extracted using supercritical carbon dioxide (SCCO 2 ) (34.0 MPa and 40.0 °C) and a commercial organic solvent (AW406). Oil solubility was obtained through several stepwise extractions under the conditions of this study, and then three additional extractions were performed to measure fatty acid compositions, iodine values, chlorophyll concentrations and unsaponifiable matter. The yield of SCCO 2 extraction was lower than that after extraction with AW406 solvent, due to the incomplete SCCO 2 extraction process. Fatty acid composition analysis showed that the SCCO 2 ‐extracted oil was slightly higher in polyunsaturated fatty acids and lower in erucic and behenic acids. However, iodine values and unsaponifiable matter did not indicate significant differences ( p >0.05) in the two extracted oils. The chlorophyll concentration of SCCO 2 ‐extracted oil was lower than that in the AW406 solvent, and as a result, the color of SCCO 2 ‐extracted oil was lighter.