A - Human Necessities – 23 – D
Patent
A - Human Necessities
23
D
99/165
A23D 9/02 (2006.01) C11B 3/00 (2006.01)
Patent
CA 1303416
Abstract Refining of fish waste product so that a concentrate of .omega.3-fatty acid alkyl ester is formed with 20-30% eicosa- pentaenoic acid alkyl ester and 35-50% docosahexaenoic acid alkyl ester (both by weight) free from cholesterol. The .omega.3-concentrate is produced through urea precipitation of the non- .omega.3-fatty acid esters so that the filtrate from the pre- cipitation may be extracted by means of hexane for the trans- mission of the .omega.3-fatty acid esters and the cholesterol to the hexane extract, Hexane is thereafter removed. The remaining concentrate of the fatty acid esters with the chol- esterol is cooled to a temperature of not lower than -50°C, whereby the cholesterol is crystallized. The remainder is a .omega.3-concentrate with the composition mentioned above.
523914
Borretzen Bernt
Breivik Harald
Jõrgensen Tore-Erling
Fetherstonhaugh & Co.
Norsk Hydro A.s
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