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Simultaneous detoxification and enzyme production of hemicellulose hydrolysates obtained after steam pretreatment

Palmqvist, E; Hahn-Hägerdal, Bärbel LU ; Szengyel, Z; Zacchi, Guido LU and Reczey, K (1997) In Enzyme and Microbial Technology 20(4). p.286-293
Abstract
In the process of making ethanol from lignocellulosic materials, compounds inhibitory to microorganisms are generated during steam pretreatment of the wood. Water-soluble inhibitors and pentoses are liberated and washed from the cellulose structure which is further enzymatically hydrolyzed. To make the process economically feasible, rite pentoses have to be fermented to ethanol. A major drawback with the pentose-fermenting organisms that have been suggested for this purpose is that they do not tolerate an inhibitory environment and there fore, the pentose stream has to be detoxified prior to fermentation. An alternative use of the hemicellulose hydrolysate obtained after steam;pretreatment of willow is to use it for. enzyme production by... (More)
In the process of making ethanol from lignocellulosic materials, compounds inhibitory to microorganisms are generated during steam pretreatment of the wood. Water-soluble inhibitors and pentoses are liberated and washed from the cellulose structure which is further enzymatically hydrolyzed. To make the process economically feasible, rite pentoses have to be fermented to ethanol. A major drawback with the pentose-fermenting organisms that have been suggested for this purpose is that they do not tolerate an inhibitory environment and there fore, the pentose stream has to be detoxified prior to fermentation. An alternative use of the hemicellulose hydrolysate obtained after steam;pretreatment of willow is to use it for. enzyme production by the cellulolytic fungus Trichoderma reesei. The sugars in the pentose function are almost completely utilized, and simultaneously the hemicellulose hydrolysate is detoxified and can be recirculated in rite process to minimize the need for freshwater. (C) 1997 by Elsevier Science Inc. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ethanol production, lignocellulosic material, inhibitors, detoxification, enzyme production, fermentation
in
Enzyme and Microbial Technology
volume
20
issue
4
pages
286 - 293
publisher
Elsevier
external identifiers
  • wos:A1997WM44700006
  • scopus:0343052726
ISSN
0141-0229
DOI
10.1016/S0141-0229(96)00130-5
language
English
LU publication?
yes
id
00fd4518-c31a-456a-b58d-d579c10124bc (old id 3911492)
date added to LUP
2013-06-28 13:16:48
date last changed
2017-07-09 03:38:22
@article{00fd4518-c31a-456a-b58d-d579c10124bc,
  abstract     = {In the process of making ethanol from lignocellulosic materials, compounds inhibitory to microorganisms are generated during steam pretreatment of the wood. Water-soluble inhibitors and pentoses are liberated and washed from the cellulose structure which is further enzymatically hydrolyzed. To make the process economically feasible, rite pentoses have to be fermented to ethanol. A major drawback with the pentose-fermenting organisms that have been suggested for this purpose is that they do not tolerate an inhibitory environment and there fore, the pentose stream has to be detoxified prior to fermentation. An alternative use of the hemicellulose hydrolysate obtained after steam;pretreatment of willow is to use it for. enzyme production by the cellulolytic fungus Trichoderma reesei. The sugars in the pentose function are almost completely utilized, and simultaneously the hemicellulose hydrolysate is detoxified and can be recirculated in rite process to minimize the need for freshwater. (C) 1997 by Elsevier Science Inc.},
  author       = {Palmqvist, E and Hahn-Hägerdal, Bärbel and Szengyel, Z and Zacchi, Guido and Reczey, K},
  issn         = {0141-0229},
  keyword      = {ethanol production,lignocellulosic material,inhibitors,detoxification,enzyme production,fermentation},
  language     = {eng},
  number       = {4},
  pages        = {286--293},
  publisher    = {Elsevier},
  series       = {Enzyme and Microbial Technology},
  title        = {Simultaneous detoxification and enzyme production of hemicellulose hydrolysates obtained after steam pretreatment},
  url          = {http://dx.doi.org/10.1016/S0141-0229(96)00130-5},
  volume       = {20},
  year         = {1997},
}