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Selective extraction of phosphatidylcholine from lecithin by supercritical carbon dioxide/ethanol mixture
Author(s) -
Teberikler Leyla,
Koseoglu Sefa,
Akgerman Aydin
Publication year - 2001
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/s11746-001-0230-2
Subject(s) - supercritical carbon dioxide , supercritical fluid , extraction (chemistry) , lecithin , ethanol , chemistry , phosphatidylcholine , chromatography , supercritical fluid extraction , carbon dioxide , solvent , fraction (chemistry) , organic chemistry , phospholipid , biochemistry , membrane
Selective extraction of phosphatidylcholine (PC) from deoiled soybean lecithin using supercritical fluid (SCF) mixtures of carbon dioxide (CO 2 ) and ethanol was studied at moderate pressures. Temperature was varied between 60 and 80°C at pressures of 17.2 and 20.7 MPa. Ethanol was added as co‐solvent to supercritical CO 2 at the levels of 10 and 12.5 wt%. Constant rate of extraction of the individual phospholipids (PL) was observed for 150 min during which the extractions were carried out. Pressure and ethanol fraction had a positive effect on the selective extraction of PC, whereas temperature had a negative effect. Under all the conditions studied, the extracts were mainly composed of PC while the extraction of the other PL was very low. Extraction at 60°C and 20.7 MPa with 10 wt% ethanol/90 wt% CO 2 SCF mixture resulted in 95% selectivity to PC.