Hydrolysis of nonstarch carbohydrates of wheat-starch effluent for ethanol production
(2004) In Biotechnology Progress 20(2). p.474-479- Abstract
- A (polysaccharide-rich) waste stream derived from a combined starch and ethanol factory was investigated regarding hydrolysis of the nonstarch carbohydrates for ethanol production. The material was characterized and processed to yield the maximum amount of sugars. The starch fraction was hydrolyzed with amylolytic enzymes, and the resulting fibrous material was separated by filtration. This material, denoted starch-free fibers (SFF), was subjected to heat treatment followed by enzymatic hydrolysis to recover the other major carbohydrate components, namely, cellulose and hemicellulose, in monomeric form. Heat treatment in a microwave oven efficiently solubilized a fraction of these polysaccharides and made the material more accessible to... (More)
- A (polysaccharide-rich) waste stream derived from a combined starch and ethanol factory was investigated regarding hydrolysis of the nonstarch carbohydrates for ethanol production. The material was characterized and processed to yield the maximum amount of sugars. The starch fraction was hydrolyzed with amylolytic enzymes, and the resulting fibrous material was separated by filtration. This material, denoted starch-free fibers (SFF), was subjected to heat treatment followed by enzymatic hydrolysis to recover the other major carbohydrate components, namely, cellulose and hemicellulose, in monomeric form. Heat treatment in a microwave oven efficiently solubilized a fraction of these polysaccharides and made the material more accessible to the cellulolytic and hemicellulolytic enzymes used in the subsequent enzymatic hydrolysis. The maximum sugar yield after enzymatic hydrolysis, achieved with pretreatment at 170 degreesC for 40 min, was 34.1 g per 100 g SFF, comprising 12.8 g glucose, 13.9 g xylose and 7.4 g arabinose, corresponding to 66%, 71% and 51% of the theoretical, respectively. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/138875
- author
- Palmarola Adrados, Beatriz LU ; Juhasz, T ; Galbe, Mats LU and Zacchi, Guido LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Biotechnology Progress
- volume
- 20
- issue
- 2
- pages
- 474 - 479
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000220652600009
- scopus:11144357448
- ISSN
- 1520-6033
- DOI
- 10.1021/bp034243h
- language
- English
- LU publication?
- yes
- id
- 9f028d2e-8d16-4cd7-9167-8f126a47854b (old id 138875)
- date added to LUP
- 2016-04-01 17:14:37
- date last changed
- 2023-10-17 13:22:05
@article{9f028d2e-8d16-4cd7-9167-8f126a47854b,
abstract = {{A (polysaccharide-rich) waste stream derived from a combined starch and ethanol factory was investigated regarding hydrolysis of the nonstarch carbohydrates for ethanol production. The material was characterized and processed to yield the maximum amount of sugars. The starch fraction was hydrolyzed with amylolytic enzymes, and the resulting fibrous material was separated by filtration. This material, denoted starch-free fibers (SFF), was subjected to heat treatment followed by enzymatic hydrolysis to recover the other major carbohydrate components, namely, cellulose and hemicellulose, in monomeric form. Heat treatment in a microwave oven efficiently solubilized a fraction of these polysaccharides and made the material more accessible to the cellulolytic and hemicellulolytic enzymes used in the subsequent enzymatic hydrolysis. The maximum sugar yield after enzymatic hydrolysis, achieved with pretreatment at 170 degreesC for 40 min, was 34.1 g per 100 g SFF, comprising 12.8 g glucose, 13.9 g xylose and 7.4 g arabinose, corresponding to 66%, 71% and 51% of the theoretical, respectively.}},
author = {{Palmarola Adrados, Beatriz and Juhasz, T and Galbe, Mats and Zacchi, Guido}},
issn = {{1520-6033}},
language = {{eng}},
number = {{2}},
pages = {{474--479}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Biotechnology Progress}},
title = {{Hydrolysis of nonstarch carbohydrates of wheat-starch effluent for ethanol production}},
url = {{http://dx.doi.org/10.1021/bp034243h}},
doi = {{10.1021/bp034243h}},
volume = {{20}},
year = {{2004}},
}