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Dilute-acid hydrolysis for fermentation of the Bolivian straw material Paja Brava

Sanchez, Gladys LU ; Pilcher, Linda LU ; Roslander, Christian LU ; Modig, Tobias LU ; Galbe, Mats LU and Lidén, Gunnar LU (2004) In Bioresource Technology 93(3). p.249-256
Abstract
Hydrolysis of the straw material Paja Brava, a sturdy grass characteristic for the high plains of Bolivia, was studied in order to find suitable conditions for hydrolysis of the hemicellulose and cellulose parts. Dried Paja Brava material was pre-steamed, impregnated with dilute sulfuric acid (0.5% or 1.0% by wt), and subsequently hydrolyzed in a reactor at temperatures between 170 and 230 degreesC for a reaction time between 3 and 10 min. The highest yield of xylose (indicating efficient hydrolysis of hemicellulose) were found at a temperature of 190 degreesC, and a reaction time of 5-10 min, whereas considerably higher temperatures (230 degreesC) were needed for hydrolysis of cellulose. Fermentability of hemicellulose hydrolyzates was... (More)
Hydrolysis of the straw material Paja Brava, a sturdy grass characteristic for the high plains of Bolivia, was studied in order to find suitable conditions for hydrolysis of the hemicellulose and cellulose parts. Dried Paja Brava material was pre-steamed, impregnated with dilute sulfuric acid (0.5% or 1.0% by wt), and subsequently hydrolyzed in a reactor at temperatures between 170 and 230 degreesC for a reaction time between 3 and 10 min. The highest yield of xylose (indicating efficient hydrolysis of hemicellulose) were found at a temperature of 190 degreesC, and a reaction time of 5-10 min, whereas considerably higher temperatures (230 degreesC) were needed for hydrolysis of cellulose. Fermentability of hemicellulose hydrolyzates was tested using the xylose-fermenting yeast species Pichia stipitis, Candida shehatae and Pachysolen tannophilus. The fermentability of hydrolyzates decreased strongly for hydrolyzates produced at temperatures higher than 200 degreesC. (C) 2003 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Bioresource Technology
volume
93
issue
3
pages
249 - 256
publisher
Elsevier
external identifiers
  • pmid:15062819
  • wos:000221810700005
  • scopus:1842556269
ISSN
1873-2976
DOI
10.1016/j.biortech.2003.11.003
language
English
LU publication?
yes
id
bcf7a16d-aac3-4910-ab0a-9b2225725775 (old id 138831)
date added to LUP
2007-06-25 15:49:44
date last changed
2017-10-01 04:38:30
@article{bcf7a16d-aac3-4910-ab0a-9b2225725775,
  abstract     = {Hydrolysis of the straw material Paja Brava, a sturdy grass characteristic for the high plains of Bolivia, was studied in order to find suitable conditions for hydrolysis of the hemicellulose and cellulose parts. Dried Paja Brava material was pre-steamed, impregnated with dilute sulfuric acid (0.5% or 1.0% by wt), and subsequently hydrolyzed in a reactor at temperatures between 170 and 230 degreesC for a reaction time between 3 and 10 min. The highest yield of xylose (indicating efficient hydrolysis of hemicellulose) were found at a temperature of 190 degreesC, and a reaction time of 5-10 min, whereas considerably higher temperatures (230 degreesC) were needed for hydrolysis of cellulose. Fermentability of hemicellulose hydrolyzates was tested using the xylose-fermenting yeast species Pichia stipitis, Candida shehatae and Pachysolen tannophilus. The fermentability of hydrolyzates decreased strongly for hydrolyzates produced at temperatures higher than 200 degreesC. (C) 2003 Elsevier Ltd. All rights reserved.},
  author       = {Sanchez, Gladys and Pilcher, Linda and Roslander, Christian and Modig, Tobias and Galbe, Mats and Lidén, Gunnar},
  issn         = {1873-2976},
  language     = {eng},
  number       = {3},
  pages        = {249--256},
  publisher    = {Elsevier},
  series       = {Bioresource Technology},
  title        = {Dilute-acid hydrolysis for fermentation of the Bolivian straw material Paja Brava},
  url          = {http://dx.doi.org/10.1016/j.biortech.2003.11.003},
  volume       = {93},
  year         = {2004},
}