Patent ID: 7588791
Filing Date: 2009-09-15
Classification: A23D,A23L,A23V,C11B

Abstract:
1. A method for producing concentrated polyunsaturated fatty acid-triglyceride mixtures, the method comprising the steps of: i) dissolving a natural polyunsaturated fatty acid oil in an organic solvent or an organic solvent mixture to form a solution, wherein between 1% to 10% by weight of the solution is natural polyunsaturated fatty acid oil based on the weight of the solvent or solvent mixture, and wherein the natural polyunsaturated fatty acid oil has a triglyceride content of greater than 85% by weight based on the total weight of the natural polyunsaturated fatty acid oil and a total polyunsaturated fatty acid content of greater than 39% by weight of total fatty acids; ii) winterizing the solution by allowing the solution to stand at a temperature in the range of between −35° C. to −100° C. for between five minutes to eighteen hours to form a heterogenous mixture; iii) separating the heterogenous mixture into a supernatant and a sediment phase, wherein the supernatant includes a concentrated polyunsaturated fatty acid-triglyceride mixture; and (iv) removing the organic solvent from the supernatant, thereby producing a concentrated polyunsaturated fatty acid-triglyceride mixture.