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Preparation of hydrolysates from tobacco stalks and ethanolic fermentation by Saccharomyces cerevisiae

Martin, C; Fernandez, T; Garcia, R; Carrillo, E; Marcet, M; Galbe, Mats LU and Jonsson, LJ (2002) In World Journal of Microbiology & Biotechnology 18(9). p.857-862
Abstract
Chipped tobacco stalks were subjected to steam pretreatment at 205 degreesC for either 5 or 10 min before enzymatic hydrolysis. Glucose (15.4 - 17.1 g/l) and xylose (4.5-5.0 g/l) were the most abundant monosaccharides in the hydrolysates. Mannose, galactose and arabinose were also detected. The hydrolysate produced by pretreatment for 10 min contained higher levels of all sugars than the 5 min-pretreated hydrolysate. The amounts of inhibitory compounds found in the hydrolysates were relatively low and increased with increasing pretreatment time. The hydrolysates were fermented with baker's yeast. Ethanol yield, maximum volumetric productivity and specific productivity were used as criteria of fermentability of the hydrolysates. The... (More)
Chipped tobacco stalks were subjected to steam pretreatment at 205 degreesC for either 5 or 10 min before enzymatic hydrolysis. Glucose (15.4 - 17.1 g/l) and xylose (4.5-5.0 g/l) were the most abundant monosaccharides in the hydrolysates. Mannose, galactose and arabinose were also detected. The hydrolysate produced by pretreatment for 10 min contained higher levels of all sugars than the 5 min-pretreated hydrolysate. The amounts of inhibitory compounds found in the hydrolysates were relatively low and increased with increasing pretreatment time. The hydrolysates were fermented with baker's yeast. Ethanol yield, maximum volumetric productivity and specific productivity were used as criteria of fermentability of the hydrolysates. The fermentation of the hydrolysates was only slightly inhibited compared to reference solutions having a similar composition of fermentable sugars. The ethanol yield in the hydrolysates was 0.38-0.39 g/g of initial fermentable sugars, whereas it was 0.42 g/g in the reference. The biomass yield was twofold lower in the hydrolysates than in the reference. The fermentation inhibition caused by the tobacco stalk hydrolysates was less than that caused by sugarcane bagasse hydrolysates obtained under the same hydrolysis conditions. (Less)
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author
organization
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Contribution to journal
publication status
published
subject
keywords
lignocellulose hydrolysates, ethanol, fermentation inhibitors, Saccharomyces cerevisiae, tobacco stalks
in
World Journal of Microbiology & Biotechnology
volume
18
issue
9
pages
857 - 862
publisher
Springer
external identifiers
  • wos:000179509500008
  • scopus:0036939868
ISSN
0959-3993
DOI
10.1023/A:1021258708507
language
English
LU publication?
yes
id
908644aa-b130-46be-a8e3-093c4afdbfec (old id 322123)
date added to LUP
2007-11-16 14:04:42
date last changed
2017-04-16 04:11:55
@article{908644aa-b130-46be-a8e3-093c4afdbfec,
  abstract     = {Chipped tobacco stalks were subjected to steam pretreatment at 205 degreesC for either 5 or 10 min before enzymatic hydrolysis. Glucose (15.4 - 17.1 g/l) and xylose (4.5-5.0 g/l) were the most abundant monosaccharides in the hydrolysates. Mannose, galactose and arabinose were also detected. The hydrolysate produced by pretreatment for 10 min contained higher levels of all sugars than the 5 min-pretreated hydrolysate. The amounts of inhibitory compounds found in the hydrolysates were relatively low and increased with increasing pretreatment time. The hydrolysates were fermented with baker's yeast. Ethanol yield, maximum volumetric productivity and specific productivity were used as criteria of fermentability of the hydrolysates. The fermentation of the hydrolysates was only slightly inhibited compared to reference solutions having a similar composition of fermentable sugars. The ethanol yield in the hydrolysates was 0.38-0.39 g/g of initial fermentable sugars, whereas it was 0.42 g/g in the reference. The biomass yield was twofold lower in the hydrolysates than in the reference. The fermentation inhibition caused by the tobacco stalk hydrolysates was less than that caused by sugarcane bagasse hydrolysates obtained under the same hydrolysis conditions.},
  author       = {Martin, C and Fernandez, T and Garcia, R and Carrillo, E and Marcet, M and Galbe, Mats and Jonsson, LJ},
  issn         = {0959-3993},
  keyword      = {lignocellulose hydrolysates,ethanol,fermentation inhibitors,Saccharomyces cerevisiae,tobacco stalks},
  language     = {eng},
  number       = {9},
  pages        = {857--862},
  publisher    = {Springer},
  series       = {World Journal of Microbiology & Biotechnology},
  title        = {Preparation of hydrolysates from tobacco stalks and ethanolic fermentation by Saccharomyces cerevisiae},
  url          = {http://dx.doi.org/10.1023/A:1021258708507},
  volume       = {18},
  year         = {2002},
}