Extraction of water-soluble hemicelluloses from barley husks.
(2009) In Bioresource Technology 100(2). p.763-769- Abstract
- Heat treatment of barley husks was performed to extract arabinoxylan with high yield and high weight-averaged molecular mass (M(W)). Microwave irradiation was employed for initial screening of suitable residence times (2-15min), temperatures (120-210 degrees C) and initial pH (3-13) of the reaction slurry. Microwave irradiation was shown to be a good method for predicting the effects of heat treatment on a larger scale using steam pretreatment. A M(W) of about 40,000Da was achieved without the addition of chemicals, by both microwave irradiation and steam pretreatment, with a yield of about 9%. The yield was significantly increased by slightly increasing the severity factor. However, the M(W) decreased below 20,000Da at severity factors... (More)
- Heat treatment of barley husks was performed to extract arabinoxylan with high yield and high weight-averaged molecular mass (M(W)). Microwave irradiation was employed for initial screening of suitable residence times (2-15min), temperatures (120-210 degrees C) and initial pH (3-13) of the reaction slurry. Microwave irradiation was shown to be a good method for predicting the effects of heat treatment on a larger scale using steam pretreatment. A M(W) of about 40,000Da was achieved without the addition of chemicals, by both microwave irradiation and steam pretreatment, with a yield of about 9%. The yield was significantly increased by slightly increasing the severity factor. However, the M(W) decreased below 20,000Da at severity factors above 3.7. Arabinosyl side groups were enzymatically hydrolysed from the arabinoxylan by alpha-l-arabinofuranosidase to a degree of 47%, demonstrating the ability to specifically alter the side group substitution of arabinoxylans with the use of enzymes. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1243537
- author
- Roos, Alexandra ; Persson, Tobias LU ; Krawczyk, Holger LU ; Zacchi, Guido LU and Stålbrand, Henrik LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Bioresource Technology
- volume
- 100
- issue
- 2
- pages
- 763 - 769
- publisher
- Elsevier
- external identifiers
-
- wos:000261080700039
- pmid:18762412
- scopus:53649099196
- pmid:18762412
- ISSN
- 1873-2976
- DOI
- 10.1016/j.biortech.2008.07.022
- language
- English
- LU publication?
- yes
- id
- a35f875d-4abc-4ae2-86e4-aaaebe7d9f0c (old id 1243537)
- date added to LUP
- 2016-04-01 13:23:53
- date last changed
- 2023-11-12 16:01:00
@article{a35f875d-4abc-4ae2-86e4-aaaebe7d9f0c,
abstract = {{Heat treatment of barley husks was performed to extract arabinoxylan with high yield and high weight-averaged molecular mass (M(W)). Microwave irradiation was employed for initial screening of suitable residence times (2-15min), temperatures (120-210 degrees C) and initial pH (3-13) of the reaction slurry. Microwave irradiation was shown to be a good method for predicting the effects of heat treatment on a larger scale using steam pretreatment. A M(W) of about 40,000Da was achieved without the addition of chemicals, by both microwave irradiation and steam pretreatment, with a yield of about 9%. The yield was significantly increased by slightly increasing the severity factor. However, the M(W) decreased below 20,000Da at severity factors above 3.7. Arabinosyl side groups were enzymatically hydrolysed from the arabinoxylan by alpha-l-arabinofuranosidase to a degree of 47%, demonstrating the ability to specifically alter the side group substitution of arabinoxylans with the use of enzymes.}},
author = {{Roos, Alexandra and Persson, Tobias and Krawczyk, Holger and Zacchi, Guido and Stålbrand, Henrik}},
issn = {{1873-2976}},
language = {{eng}},
number = {{2}},
pages = {{763--769}},
publisher = {{Elsevier}},
series = {{Bioresource Technology}},
title = {{Extraction of water-soluble hemicelluloses from barley husks.}},
url = {{http://dx.doi.org/10.1016/j.biortech.2008.07.022}},
doi = {{10.1016/j.biortech.2008.07.022}},
volume = {{100}},
year = {{2009}},
}