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Improvement of arabinoxylan isolation from barley husks

Persson, Tobias LU ; Dinh, Eva LU and Jönsson, Ann-Sofi LU (2009) In Food and Bioproducts Processing 87(3). p.228-233
Abstract
A method of extracting arabinoxylan from barley husks has previously been developed, but was found to suffer from three problems, namely: starch was dispersed in the aqueous phase during steam pretreatment, the yield of extracted arabinoxylan with high molecular mass was low in the steam pretreatment step, and there was high filtration resistance in the clarification step. This paper presents possible solutions to these problems. Starch was removed prior to steam pretreatment by boiling the husks in water for one hour. This treatment decreased the content of glucan in the aqueous phase after steam pre-treatment by 75%. The yield of arabinoxylan with a molecular mass greater than 5 kDa was increased from 5% to 25% by using alkaline... (More)
A method of extracting arabinoxylan from barley husks has previously been developed, but was found to suffer from three problems, namely: starch was dispersed in the aqueous phase during steam pretreatment, the yield of extracted arabinoxylan with high molecular mass was low in the steam pretreatment step, and there was high filtration resistance in the clarification step. This paper presents possible solutions to these problems. Starch was removed prior to steam pretreatment by boiling the husks in water for one hour. This treatment decreased the content of glucan in the aqueous phase after steam pre-treatment by 75%. The yield of arabinoxylan with a molecular mass greater than 5 kDa was increased from 5% to 25% by using alkaline impregnation (1 wt% NaOH). A vibrating shear-enhanced microfiltration unit was proven to be an alternative method to traditional filtration for clarification of the aqueous phase. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Food and Bioproducts Processing
volume
87
issue
3
pages
228 - 233
publisher
Elsevier
external identifiers
  • scopus:70349466194
ISSN
1744-3571
DOI
10.1016/j.fbp.2008.10.001
language
English
LU publication?
yes
id
14cb798a-3edc-4b9b-9cba-418170848c2b (old id 1488396)
date added to LUP
2009-10-26 11:16:16
date last changed
2017-11-26 03:14:28
@article{14cb798a-3edc-4b9b-9cba-418170848c2b,
  abstract     = {A method of extracting arabinoxylan from barley husks has previously been developed, but was found to suffer from three problems, namely: starch was dispersed in the aqueous phase during steam pretreatment, the yield of extracted arabinoxylan with high molecular mass was low in the steam pretreatment step, and there was high filtration resistance in the clarification step. This paper presents possible solutions to these problems. Starch was removed prior to steam pretreatment by boiling the husks in water for one hour. This treatment decreased the content of glucan in the aqueous phase after steam pre-treatment by 75%. The yield of arabinoxylan with a molecular mass greater than 5 kDa was increased from 5% to 25% by using alkaline impregnation (1 wt% NaOH). A vibrating shear-enhanced microfiltration unit was proven to be an alternative method to traditional filtration for clarification of the aqueous phase.},
  author       = {Persson, Tobias and Dinh, Eva and Jönsson, Ann-Sofi},
  issn         = {1744-3571},
  language     = {eng},
  number       = {3},
  pages        = {228--233},
  publisher    = {Elsevier},
  series       = {Food and Bioproducts Processing},
  title        = {Improvement of arabinoxylan isolation from barley husks},
  url          = {http://dx.doi.org/10.1016/j.fbp.2008.10.001},
  volume       = {87},
  year         = {2009},
}