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Title:
METHOD FOR TREATING VEGETABLE MATERIAL WITH ACID AS WELL AS PRODUCTS OBTAINED WITH THIS METHOD
Document Type and Number:
WIPO Patent Application WO/2009/145617
Kind Code:
A3
Abstract:
The present invention relates to a method for treating carbohydrate-containing vegetable material with acid, comprising the steps of: (a) providing a mixture of a carbohydrate-containing vegetable material, an organic acid and, if necessary, water, (b) heating the mixture obtained in step (a) to a temperature of at least 120°C for some time so as to obtain a mixture comprising an acid-treated insoluble vegetable material, water, a carbohydrate-containing vegetable material that has been rendered soluble and possibly an organic acid, (c) repeating step (b) at least once, with steps (d) and (e) being carried out prior to step (b): (d) separating the acid-treated insoluble vegetable material from the mixture obtained in step (b) so as to obtain a liquid fraction which comprises carbohydrate-containing vegetable material that has been rendered soluble, (e) adding additional carbohydrate-containing vegetable material and possibly additional organic acid to the liquid fraction obtained in step (d), wherein the mixture that is used upon repeating step (b) is the mixture that is obtained in step (e).

Inventors:
SANDERS, Johan, Pieter, Marinus (Saaksumborg 1, WL Groningen, NL-9722, NL)
DE BOT, Petrus, Hubertus, Marie (Lavasveld 98, KR Veghel, NL-5467, NL)
KOOTSTRA, Anne, Maarten, Joost (Hof van Sint pieter 22, TS Bennekom, NL-6721, NL)
Application Number:
NL2009/000125
Publication Date:
December 03, 2009
Filing Date:
May 29, 2009
Export Citation:
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Assignee:
COÖPERATIE CEHAVE LANDBOUWBELANG U.A. (Poort van Veghel 4949, SB Veghel, NL-5466, NL)
SANDERS, Johan, Pieter, Marinus (Saaksumborg 1, WL Groningen, NL-9722, NL)
DE BOT, Petrus, Hubertus, Marie (Lavasveld 98, KR Veghel, NL-5467, NL)
KOOTSTRA, Anne, Maarten, Joost (Hof van Sint pieter 22, TS Bennekom, NL-6721, NL)
International Classes:
A23K1/12; A23K1/14; A23K3/03
Foreign References:
US20050271770A12005-12-08
Other References:
LU YULIN ET AL: "Biomimetic catalysis for hemicellulose hydrolysis in corn stover" BIOTECHNOLOGY PROGRESS, vol. 23, no. 1, January 2007 (2007-01), pages 116-123, XP002512196 ISSN: 8756-7938
SAHA B C ET AL: "Dilute acid pretreatment, enzymatic saccharification and fermentation of wheat straw to ethanol" PROCESS BIOCHEMISTRY, ELSEVIER, NL, vol. 40, no. 12, 1 December 2005 (2005-12-01), pages 3693-3700, XP025306655 ISSN: 1359-5113 [retrieved on 2005-12-01]
KARIMI K ET AL: "Conversion of rice straw to sugars by dilute-acid hydrolysis" BIOMASS AND BIOENERGY, PERGAMON, OXFORD, GB, vol. 30, no. 3, 1 March 2006 (2006-03-01), pages 247-253, XP025109448 ISSN: 0961-9534 [retrieved on 2006-03-01]
LLOYD T A ET AL: "Combined sugar yields for dilute sulfuric acid pretreatment of corn stover followed by enzymatic hydrolysis of the remaining solids" BIORESOURCE TECHNOLOGY, ELSEVIER, GB, vol. 96, no. 18, 1 December 2005 (2005-12-01), pages 1967-1977, XP025313205 ISSN: 0960-8524 [retrieved on 2005-12-01] cited in the application
MOSIER N ET AL: "Features of promising technologies for pretreatment of lignocellulosic biomass" BIORESOURCE TECHNOLOGY, ELSEVIER, GB, vol. 96, no. 6, 1 April 2005 (2005-04-01), pages 673-686, XP025313257 ISSN: 0960-8524 [retrieved on 2005-04-01]
SUN Y ET AL: "Dilute acid pretreatment of rye straw and bermudagrass for ethanol production" BIORESOURCE TECHNOLOGY, ELSEVIER, GB, vol. 96, no. 14, 1 September 2005 (2005-09-01), pages 1599-1606, XP025313364 ISSN: 0960-8524 [retrieved on 2005-09-01]
DIEN B S ET AL: "Chemical composition and response to dilute-acid pretreatment and enzymatic saccharification of alfalfa, reed canarygrass, and switchgrass" BIOMASS AND BIOENERGY, PERGAMON, OXFORD, GB, vol. 30, no. 10, 1 October 2006 (2006-10-01), pages 880-891, XP025109390 ISSN: 0961-9534 [retrieved on 2006-10-01]
Attorney, Agent or Firm:
BLOKLAND, Arie et al. (Algemeen Octrooi- en Merkenbureau, P.O. Box 645, AP Eindhoven, NL-5600, NL)
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