Extraction of Triglycerides and Phospholipids from Canola with Supercritical Carbon Dioxide and Ethanol

Phospholipids used as emulsifiers were sparingly soluble in supercritical CO 2 (SC‐CO 2 ), but could be recovered with the addition of ethanol as an entrainer. Triglycerides and lipids containing phospholipids were extracted with SC‐CO 2 in two subsequent steps from both canola flakes and press cake containing 0 and 5% ethanol, respectively. 70°C, 62.0 MPa and addition of ethanol at an initial level of 5% gave maximum yield of lipids. TLC showed the presence of phospholipids in SC‐CO 2 ‐ethanol extracts. SC‐CO 2 extracts of flakes did not contain long chain fatty acids (C20:0, C22:0, C22:1), but they were extracted when ethanol was added to flakes and when press cake was the raw material.