Method for producing high purity omega-3 fatty acid ethyl ester
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United States of America Patent
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Mar 26, 2019
Grant Date -
Jul 21, 2016
app pub date -
Aug 18, 2014
filing date -
Aug 30, 2013
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Abstract
The present invention relates to the field of methods for purifying fatty acid ethyl esters. According to the present invention, a method for obtaining a ω3 fatty acid ethyl ester, such as EPA and DHA, each as a high purity product at a high yield is provided. In the method according to the present invention, a raw material fat including EPA and DHA is treated with a lipolytic enzyme and ethyl-esterification is performed as needed; the treated substance is fractionated into a glyceride fraction and a free fatty acid fraction; a fraction comprising more EPA ester and a fraction comprising DHA ester are obtained from the respective fractions; the fraction comprising more EPA ester is purified to prepare a high-purity EPA ester; and the fraction comprising more DHA ester is purified to prepare a high-purity DHA ester.
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