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Received August 24, 2004
Accepted February 20, 2005
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Extraction of Lipids and Cholesterol from Squid Oil with Supercritical Carbon Dioxide
Institute of Seafood Science, Faculty of Food Science and Biotechnology, Pukyong National University, Busan 608-737, Korea 1School of Chemical Engineering, University of Adelaide, South Australia. 5000
bschun@pknu.ac.kr
Korean Journal of Chemical Engineering, May 2005, 22(3), 399-405(7), 10.1007/BF02719418
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Abstract
The oil obtained from waste squid viscera consists of multi-compounds such as EPA, DHA and other valuable polyunsaturated fatty acids. The refining of this squid oil, using supercritical carbon dioxide plus ethanol, was performed in a semi-continuous flow extractor at 8 to 17 MPa and 25 to 50 ℃. When 1.5% w/w ethanol was added to the solvent, the solubility of lipids was increased by up to 50% over the neat CO2 value. The extraction curves indicated mass transfer to be solubility limited. Cholesterol was co-extracted with the lipids but, with its lower solubility, less than 54% appeared in the refined oil. The results of the carbon dioxide/multi-compound squid oil system at applied to the extraction conditions were correlated with the mole fraction of the cholesterol and the density of the pure solvent.
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Hartono R, Mansoori GA, Suwono A, Chem. Eng. Sci., 56(24), 6949 (2001)
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Lands WEM, Fish and Human Health, Academic Press, Inc. Orlando (1986)
Mansoori GA, Schultz K, Martinelli EE, Biomed. Tech., 6, 393 (1988)
McHugh MA, Krukonis VJ, V. J., Supercritical Fluid Extraction Principles and Practice, Butterworth-Heinemann (1986)
Mohamed RS, Neves GM, Kieckbusch TG, Int. J. Food Sci. Technol., 33, 245 (1998)
Nilsson WB, Gauglitz EJ, Hudson JK, Stout VF, J. Am. Oil Chem. Soc., 65, 109 (1988)
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Valderrama JO, Silva A, Korean J. Chem. Eng., 20(4), 709 (2003)
