Abstract
Extraction of flaxseed oil was performed with supercritical carbon dioxide (SC-CO2). To investigate the effects of pressure and temperature on the solubility of oil and oil yield, three isobaric (21, 35, and 55 MPa) and two isothermal (50 and 70°C) extraction conditions were selected. Although the maximal solubility of flaxseed oil, 11.3 mg oil/g CO2, was obtained at 70°C/55 MPa, the oil yield obtained after 3 h of extraction at this condition was only 25% (g oil/g seed×100), which represented 66% of the total available oil of the flaxseed. Lipid composition and FFA and tocol (tocopherol and tocotrienol) contents of the oils obtained by both SC-CO2 and petroleum ether extraction were determined. The α-linolenic acid content of the SC-CO2-extracted oil was higher than that obtained by solvent extraction.
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Bozan, B., Temelli, F. Supercritical CO2 extraction of flaxseed. J Amer Oil Chem Soc 79, 231–235 (2002). https://doi.org/10.1007/s11746-002-0466-x
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DOI: https://doi.org/10.1007/s11746-002-0466-x