Global Patent Index - EP 1015498 A1

EP 1015498 A1 2000-07-05 - FRACTIONATION OF HEMICELLULOSIC MATERIALS

Title (en)

FRACTIONATION OF HEMICELLULOSIC MATERIALS

Title (de)

FRAKTIONIERUNG VON HEMIZELLULOSEMATERIALIEN

Title (fr)

FRACTIONNEMENT DE MATERIAUX HEMICELLULOSIQUES

Publication

EP 1015498 A1 (EN)

Application

EP 98943418 A

Priority

  • GB 9718518 A
  • US 9817728 W

Abstract (en)

[origin: WO9911672A1] Disclosed is a process that uses selective enzymes from microbial or plant sources to facilitate the extraction of hemicellulose. Selective removal of acetate using acetyl xylan esterase (E.C.3.1.1.6) under conditions that will not hydrolyse the feruoylate esters. This treatment renders the arabinoxylan ferulate soluble under mild aqueous conditions without the use of harsh alkalis. Arabinoxylan ferulate is extracted intact and subsequently the level of ferulic acid can be controlled to give the degree of crosslinking required by treatment of the soluble arabinoxylan ferulate with ferulic acid esterase.

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

C08B 37/14; C07G 1/00; C07G 17/00; C07K 1/00; C08B 30/04; C08B 37/06; C08H 1/00; C08H 5/00; C08H 5/02; C08L 5/14; D21C 1/00

IPC 8 full level (invention and additional information)

C08B 30/04 (2006.01); C08B 37/00 (2006.01); C08H 1/00 (2006.01); C08H 99/00 (2010.01); C08L 5/14 (2006.01); C12P 19/04 (2006.01)

CPC (invention and additional information)

C08H 6/00 (2013.01); C08B 30/04 (2013.01); C08B 37/0024 (2013.01); C08B 37/0045 (2013.01); C08B 37/0057 (2013.01); C08H 1/00 (2013.01); C08H 99/00 (2013.01); C08L 5/14 (2013.01); C12P 19/04 (2013.01)

Citation (search report)

See references of WO 9911672A1

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 9911672 A1 19990311; AU 9122398 A 19990322; CN 1268955 A 20001004; EP 1015498 A1 20000705; GB 9718518 D0 19971105; ZA 9807913 B 20000229

INPADOC legal status


2001-12-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010518

2000-10-25 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000907

2000-07-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000211

2000-07-05 [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