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

2007-03-16

2008-10-21

Sullivan, Daniel M (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

C554S199000, C554S206000

Reexamination Certificate

active

07439377

ABSTRACT:
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 C16or higher conjugated unsaturated fatty acid and a mixture comprising at least two cis-isomers of a C16or 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 C4-14saturated 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).

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International Search Report for PCT/JP2005/017487 dated Sep. 22, 2005.

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