Continuous process for extraction of unsaturated triglycerides from fish oil
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United States of America Patent
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Jan 17, 2017
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Aug 11, 2016
app pub date -
Feb 11, 2015
filing date -
Feb 11, 2015
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Abstract
Disclosed is a process for the direct extraction of an omega-3 fatty acid enriched triglyceride product comprising unsaturated triglycerides with a fatty acid strand of docosahexaenoic acid (DHA) or eicosapentaenoic acid (EPA) from a crude fish oil comprising unsaturated triglycerides and saturated triglycerides having strands comprising fatty acids of at least one stearic acid, palmitic and oleic acid. Each triglyceride in the crude fish oil can be characterized by a Partition Number (PN) according to the formula:
wherein TC is a total number of carbon atoms in the fatty acid strand, and DB is the number of double bonds in the fatty acid strand. Crude fish oil diluted in non-polar solvent directly passed to an SMB zone, comprising a normal phase separation with a hydrophilic stationary phase agent and a non-polar/organic polar mobile phase desorbent to provide an omega-3 fatty acid enriched triglyceride product.
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