C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 67/56 (2006.01) C07C 51/48 (2006.01) C07C 67/58 (2006.01) C11B 7/00 (2006.01) C11C 1/02 (2006.01) C11C 1/08 (2006.01) C11C 3/10 (2006.01)
Patent
CA 2483191
A process for extracting a wide range of lipophilic compounds from urea- containing solutions is described. The process utilises a near-critical fluid as the extraction solvent. The process is particularly applicable to the extraction of polyunsaturated fatty acids from the filtrate obtained upon urea fractionation, as employed in the processing of fish and other oils. In contrast to known processes, the lipophilic compounds may be extracted without the use of non-food grade solvents, and are suitable for pharmaceutical and cosmetic use.
L'invention concerne un procédé d'extraction d'une vaste gamme de composés lipophiles à partir de solutions contenant de l'urée. Ce procédé met en oeuvre un fluide quasi-critique en tant que solvant d'extraction. Ce procédé est particulièrement adapté à l'extraction d'acides gras polyinsaturés à partir du filtrat obtenu après le fractionnement de l'urée, tel qu'employé dans le traitement du poisson et d'autres huiles. En contraste avec les procédés connus, ces composés lipophiles peuvent être extraits sans l'utilisation de solvants non alimentaires, et sont adaptés à une utilisation pharmaceutique et cosmétique.
Catchpole Owen John
Grey John Bertram
Mackenzie Andrew Douglas
Industrial Research Limited
Sim & Mcburney
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