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Bioethanol production based on simultaneous saccharification and fermentation of steam-pretreated Salix at high dry-matter content

Sassner, Per LU ; Galbe, Mats LU and Zacchi, Guido LU (2006) In Enzyme and Microbial Technology 39(4). p.756-762
Abstract
Simultaneous saccharification and fermentation (SSF) was performed on the slurries resulting from steam pretreatment of non-, SO2- and H2SO4-impregnated Salix chips. The aim was to increase the ethanol concentration by running SSF at high dry-matter content, while maintaining a high ethanol yield. Using SO2-impregnated Salix chips in steam pretreatment resulted in the highest ethanol concentration in the subsequent SSF. At a water-insoluble solids concentration of 9%, 32 g/L ethanol was obtained after 78 h of SSF, using 3.3 g/L baker's yeast (Saccharomyces cerevisiae) cultivated on the pretreatment liquid. This corresponds to an overall ethanol yield of 76% of the theoretical, based on the glucan and mannan content in the raw material. The... (More)
Simultaneous saccharification and fermentation (SSF) was performed on the slurries resulting from steam pretreatment of non-, SO2- and H2SO4-impregnated Salix chips. The aim was to increase the ethanol concentration by running SSF at high dry-matter content, while maintaining a high ethanol yield. Using SO2-impregnated Salix chips in steam pretreatment resulted in the highest ethanol concentration in the subsequent SSF. At a water-insoluble solids concentration of 9%, 32 g/L ethanol was obtained after 78 h of SSF, using 3.3 g/L baker's yeast (Saccharomyces cerevisiae) cultivated on the pretreatment liquid. This corresponds to an overall ethanol yield of 76% of the theoretical, based on the glucan and mannan content in the raw material. The cultivation procedure made the yeast better adapted to the medium. However, increasing the substrate loading further resulted in decreased fermentability. (c) 2005 Elsevier Inc. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
SSF, ethanol production, steam pretreatment, Salix, willow
in
Enzyme and Microbial Technology
volume
39
issue
4
pages
756 - 762
publisher
Elsevier
external identifiers
  • wos:000238932500035
  • scopus:33746899350
ISSN
0141-0229
DOI
10.1016/j.enzmictec.2005.12.010
language
English
LU publication?
yes
id
3e94998c-a528-4681-8b41-e715fb9993a9 (old id 402223)
date added to LUP
2007-10-17 19:19:46
date last changed
2019-08-14 01:38:16
@article{3e94998c-a528-4681-8b41-e715fb9993a9,
  abstract     = {Simultaneous saccharification and fermentation (SSF) was performed on the slurries resulting from steam pretreatment of non-, SO2- and H2SO4-impregnated Salix chips. The aim was to increase the ethanol concentration by running SSF at high dry-matter content, while maintaining a high ethanol yield. Using SO2-impregnated Salix chips in steam pretreatment resulted in the highest ethanol concentration in the subsequent SSF. At a water-insoluble solids concentration of 9%, 32 g/L ethanol was obtained after 78 h of SSF, using 3.3 g/L baker's yeast (Saccharomyces cerevisiae) cultivated on the pretreatment liquid. This corresponds to an overall ethanol yield of 76% of the theoretical, based on the glucan and mannan content in the raw material. The cultivation procedure made the yeast better adapted to the medium. However, increasing the substrate loading further resulted in decreased fermentability. (c) 2005 Elsevier Inc. All rights reserved.},
  author       = {Sassner, Per and Galbe, Mats and Zacchi, Guido},
  issn         = {0141-0229},
  keyword      = {SSF,ethanol production,steam pretreatment,Salix,willow},
  language     = {eng},
  number       = {4},
  pages        = {756--762},
  publisher    = {Elsevier},
  series       = {Enzyme and Microbial Technology},
  title        = {Bioethanol production based on simultaneous saccharification and fermentation of steam-pretreated Salix at high dry-matter content},
  url          = {http://dx.doi.org/10.1016/j.enzmictec.2005.12.010},
  volume       = {39},
  year         = {2006},
}