Process for producing concentrate of unsaturated fatty acid

Details Process for producing concentrate of unsaturated fatty acid Process for producing concentrate of unsaturated fatty acid

C - Chemistry, Metallurgy

11

C

C11C 1/08 (2006.01) C07C 51/43 (2006.01) C07C 51/47 (2006.01) C07C 57/03 (2006.01) C07C 57/12 (2006.01) C11B 7/00 (2006.01) C11C 3/08 (2006.01) A61K 31/201 (2006.01) A61P 3/06 (2006.01) A61P 9/10 (2006.01) A61P 35/00 (2006.01)

Patent

CA 2581666

An easy and inexpensive process by which a concentrate of a given unsaturated fatty acid can be obtained from a mixture which has conventionally been difficult to concentrate. The process, which is for producing a concentrate of a desired isomer (a) from a mixture (A) selected from the group consisting of a mixture comprising at least two isomers of a C16 or higher conjugated unsaturated fatty acid and a mixture comprising at least two cis-isomers of a C16 or higher unsaturated fatty acid having a cis-double bond, is characterized by comprising: a step in which the mixture (A) is mixed with at least one C4-14 saturated fatty acid (B) to obtain a mixture solution containing the isomer (a) dissolved therein; a crystallization step in which either crystals rich in the isomer (a) or crystals poor in the isomer (a) are precipitated from the mixture solution; and a solid-liquid separation step for obtaining the crystals rich in the isomer (a) or for obtaining a solution rich in the isomer (a) by removing the crystals poor in the isomer (a).

La présente invention décrit un procédé simple et peu onéreux permettant d~obtenir un concentrat d'un acide gras insaturé donné à partir d'un mélange habituellement difficile à concentrer. Le but dudit procédé est de produire un concentrat de l~isomère (a) désiré à partir d~un mélange (A) sélectionné au sein du groupe constitué par : un mélange incluant au moins deux isomères d~un acide gras insaturé conjugué comprenant au moins 16 atomes de carbone ; et un mélange incluant au moins deux isomères cis d~un acide gras insaturé comprenant une double liaison cis et au moins 16 atomes de carbone. Ledit procédé implique : une étape selon laquelle au moins un acide gras saturé en C4-C14 (B) est incorporé au mélange (A) afin d~obtenir une solution contenant l'isomère (a) sous forme dissoute ; une étape de cristallisation au cours de laquelle des cristaux soit riches en isomère (a), soit pauvres en isomère (a) précipitent dans ladite solution ; et une étape de séparation solide-liquide permettant de récupérer les cristaux riches en isomère (a), ou d~obtenir une solution riche en isomère (a) en éliminant les cristaux pauvres en isomère (a).

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