Preparation of hydrolysates from tobacco stalks and ethanolic fermentation by Saccharomyces cerevisiae
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/322123
- author
- Martin, C ; Fernandez, T ; Garcia, R ; Carrillo, E ; Marcet, M ; Galbe, Mats LU and Jonsson, LJ
- organization
- publishing date
- 2002
- type
- 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
- 2016-04-01 16:24:08
- date last changed
- 2023-11-14 10:46:07
@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}},
keywords = {{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}},
doi = {{10.1023/A:1021258708507}},
volume = {{18}},
year = {{2002}},
}