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Supercritical CO 2 extraction of flaxseed
Author(s) -
Bozan B.,
Temelli F.
Publication year - 2002
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-002-0466-x
Subject(s) - extraction (chemistry) , solubility , supercritical carbon dioxide , chemistry , petroleum ether , chromatography , yield (engineering) , supercritical fluid , solvent , supercritical fluid extraction , carbon dioxide , materials science , organic chemistry , metallurgy
Extraction of flaxseed oil was performed with supercritical carbon dioxide (SC‐CO 2 ). 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 CO 2 , 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‐CO 2 and petroleum ether extraction were determined. The α‐linolenic acid content of the SC‐CO 2 ‐extracted oil was higher than that obtained by solvent extraction.