C - Chemistry – Metallurgy – 11 – B
Patent
C - Chemistry, Metallurgy
11
B
C11B 1/10 (2006.01) A23D 9/013 (2006.01) C11C 3/04 (2006.01) C12N 1/12 (2006.01)
Patent
CA 2595917
The invention relates to a method for producing a fatty acid composition which, based on the entire weight of the fatty acids and/or fatty acid derivatives contained in the fatty acid composition, contains at least 70.0 % by weight of docosahexaenoic acid and/or docosahexaenoic alkyl ester. The inventive method comprises the following steps: a) transesterifying a biomass obtained fromUlkenia sp. with an alcohol, thereby producing at least one docosahexaenoic alkyl ester and at least one saturated fatty acid ester, b) producing a solution which contains urea, at least a part of the biomass from step a) and at least one organic solvent, c) cooling or concentrating the solution from step b), thereby producing i) a precipitate which contains urea and at least a part of the saturated fatty acid esters, and ii) a liquid fraction, and d) separating the precipitate i) from the liquid fraction ii). The invention also relates to the fatty acid composition obtainable according to the inventive method and to the use thereof.
L'invention concerne un procédé de fabrication d'une composition d'acides gras contenant au moins 70 % en poids d'acide docosahexaénoïque et/ou d'alkylester d'acide docosahexaénoïque par rapport au poids total des acides gras et/ou dérivés d'acides gras contenus dans la composition d'acides gras. Ledit procédé consiste a) transestérifier une biomasse issue de Ulkenia sp. avec au moins un alcool afin de former au moins un alkylester d'acide docosahexaénoïque et au moins un ester d'acide gras saturé ; b) à fabriquer une solution contenant de l'urée, au moins une partie de la biomasse transestérifiée de l'étape a) et au moins un solvant organique ; c) à refroidir ou concentrer la solution de l'étape b) afin de former i) un précipité contenant de l'urée et au moins une partie de l'ester d'acide gras saturé, et ii) une fraction liquide ; et d) à séparer le précipité i) de la fraction liquide ii). L'invention concerne également la composition d'acides gras selon l'invention et son utilisation.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Nutrinova Nutrition Specialties & Food Ingredients Gmbh
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