Polyunsaturated fatty acid concentrates from borage and linseed oil fatty acids |
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Authors: | Tor-Chern Chen Yi-Hsu Ju |
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Affiliation: | (1) Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, 106-07 Taipei, Taiwan |
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Abstract: | A modified low-temperature solvent crystallization process was employed for the enrichment of polyunsaturated fatty acids
(PUFA) in borage and linseed oil fatty acids. The effects of solvent, operation temperature, and solvent to free fatty acid
(FFA) ratio on the concentration of PUFA were investigated. The best results were achieved when a mixture of 30% acetonitrile
and 70% acetone was used as the solvent. With an operation temperature of −80°C and a solvent to FFA ratio of 30 mL/g, γ-linolenic
acid (GLA) in FFA of saponified borage oil can be raised from 23.4 to 88.9% with a yield of 62.0%. At a yield of 24.9%, α-linolenic
acid in linseed oil can be increased from 55.0 to 85.7%. The results of this work are comparable to the best results available
in the literature. |
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Keywords: | ALA borage oil GLA linseed oil low temperature solvent crystallization |
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