Global Patent Index - EP 1100764 A1

EP 1100764 A1 2001-05-23 - CONCENTRATION AND PURIFICATION OF POLYUNSATURATED FATTY ACID

Title (en)

CONCENTRATION AND PURIFICATION OF POLYUNSATURATED FATTY ACID

Title (de)

KONZENTRIERUNG UND REINIGUNG VON POLYUNGESÄTTIGTEN FETTSÄUREN

Title (fr)

CONCENTRATION ET PURIFICATION D'ESTERS D'ACIDES GRAS POLYINSATURES PAR COUPLAGE DISTILLATION TRANSESTERIFICATION ENZYMATIQUE

Publication

EP 1100764 A1 (EN)

Application

EP 00938359 A

Priority

  • CA 0000643 W
  • CA 2273570 A

Abstract (en)

[origin: WO0073254A1] A process for producing highly concentrated preparations of polyunsaturated fatty acids and their esters from oils, especially fish oils, in which they occur mainly as their triglyceride esters. The process uses a combination of transesterification of the triglycerides with a lower alkyl alcohol or benzyl alcohol, molecular distillation and selective enzymatic transesterification with an alkoxy alcohol catalysed by lipases which desirably can be immobilized. The process permits the separation of the acids mixture usually encountered in the oils, and isolation of desired acids in high yields. Typical acids which can be obtained by means of this process are eicosapentaenoic acid (EPA, C20:5) and docosahexaenoic acid (DHA, C22:6).

IPC 1-7 (main, further and additional classification)

C07C 67/03; C07C 69/52; C07C 69/587; C12P 7/62

IPC 8 full level (invention and additional information)

C07B 61/00 (2006.01); C07C 67/03 (2006.01); C07C 67/54 (2006.01); C07C 69/587 (2006.01); C11C 3/10 (2006.01); C12P 7/64 (2006.01)

CPC (invention and additional information)

C12P 7/6472 (2013.01); C07C 67/03 (2013.01); C07C 67/54 (2013.01); C12P 7/6454 (2013.01)

Combination set (CPC)

  1. C07C 67/03 + C07C 69/587
  2. C07C 67/54 + C07C 69/587

Citation (search report)

See references of WO 0073254A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0073254 A1 20001207; AU 5377400 A 20001218; CA 2273570 A1 20001130; EP 1100764 A1 20010523; JP 2003500082 A 20030107

INPADOC legal status


2002-11-20 [18W] WITHDRAWN

- Date of withdrawal: 20020824

2001-05-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010222

2001-05-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-05-23 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI