Composition containing eicosapentaenoic acid alkyl ester, and method for producing same
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United States of America Patent
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Mar 20, 2018
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app pub date -
Sep 17, 2015
filing date -
Sep 17, 2014
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Provided are: an eicosapentaenoic acid alkyl ester-ontaining composition which comprises 96-99 area % of an eicosapentaenoic acid alkyl ester, wherein the content of an arachidonic acid alkyl ester is 0.7 area % or less, and the content of mono-trans forms of the eicosapentaenoic acid alkyl ester is 2.5 area % or less; a method for producing a high-concentration eicosapentaenoic acid alkyl ester-containing composition, which comprises performing rectification on an eicosapentaenoic acid alkyl ester-containing composition with the degree of vacuum being 0.2 Torr or less and at a whole-column temperature 190° C. or less, and performing a concentration treatment on the rectified composition using chromatography, the eicosapentaenoic acid alkyl ester-containing composition being obtained by alkyl esterifying a feed oil containing eicosapentaenoic acid.
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