Ultrasound Assisted Alkaline Pre‐treatment Efficiently Solubilises Hemicellulose from Oat Hulls
Schmitz, Eva LU ; Karlsson, Eva Nordberg LU
and Adlercreutz, Patrick
LU
(2021)
In Waste and Biomass Valorization
12(10).
p.5371-5381
- Abstract
The establishment of sustainable bioeconomies requires the utilization of new renewable biomaterials. One such material currently seen as a waste product is oat hulls. Oat hulls exhibit a great potential for the production of dietary fibres due to their exceptionally large hemicellulose content (35%). Their recalcitrant structure however requires a suitable pre-treatment method to access and process the hemicellulose. After a screening of various physical, chemical and physico-chemical pre-treatment methods, including autoclaving, ultrasonication, microwave-, deep eutectic solvents-, as well as alkaline treatments, a combined ultrasonication and alkali pre-treatment method was here found to be the most suitable. A factorial design... (More)
The establishment of sustainable bioeconomies requires the utilization of new renewable biomaterials. One such material currently seen as a waste product is oat hulls. Oat hulls exhibit a great potential for the production of dietary fibres due to their exceptionally large hemicellulose content (35%). Their recalcitrant structure however requires a suitable pre-treatment method to access and process the hemicellulose. After a screening of various physical, chemical and physico-chemical pre-treatment methods, including autoclaving, ultrasonication, microwave-, deep eutectic solvents-, as well as alkaline treatments, a combined ultrasonication and alkali pre-treatment method was here found to be the most suitable. A factorial design resulted in optimized conditions of 10 min ultrasonication in water, followed by an incubation in 5 M NaOH at 80 ºC for 9 h yielding solubilisation of 72% of all hemicellulose in the hulls. The method was shown to efficiently break the ester bonds between ferulic acid and the hemicellulose main chain, contributing to its solubilisation. Graphic Abstract: [Figure not available: see fulltext.]
(Less)
- author
- Schmitz, Eva
LU
; Karlsson, Eva Nordberg
LU
and Adlercreutz, Patrick
LU
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Alkali pre-treatment, Hemicellulose solubilisation, Oat hulls, Ultrasonication
- in
- Waste and Biomass Valorization
- volume
- 12
- issue
- 10
- pages
- 5371 - 5381
- publisher
- Springer Science and Business Media B.V.
- external identifiers
-
- scopus:85102506733
- ISSN
- 1877-2641
- DOI
- 10.1007/s12649-021-01406-0
- language
- English
- LU publication?
- yes
- id
- 0cf32b48-0c4d-42d0-8f69-ea939fdaa777
- date added to LUP
- 2021-03-29 07:41:24
- date last changed
- 2025-10-14 10:07:39
@article{0cf32b48-0c4d-42d0-8f69-ea939fdaa777,
abstract = {{<p>The establishment of sustainable bioeconomies requires the utilization of new renewable biomaterials. One such material currently seen as a waste product is oat hulls. Oat hulls exhibit a great potential for the production of dietary fibres due to their exceptionally large hemicellulose content (35%). Their recalcitrant structure however requires a suitable pre-treatment method to access and process the hemicellulose. After a screening of various physical, chemical and physico-chemical pre-treatment methods, including autoclaving, ultrasonication, microwave-, deep eutectic solvents-, as well as alkaline treatments, a combined ultrasonication and alkali pre-treatment method was here found to be the most suitable. A factorial design resulted in optimized conditions of 10 min ultrasonication in water, followed by an incubation in 5 M NaOH at 80 ºC for 9 h yielding solubilisation of 72% of all hemicellulose in the hulls. The method was shown to efficiently break the ester bonds between ferulic acid and the hemicellulose main chain, contributing to its solubilisation. Graphic Abstract: [Figure not available: see fulltext.]</p>}},
author = {{Schmitz, Eva and Karlsson, Eva Nordberg and Adlercreutz, Patrick}},
issn = {{1877-2641}},
keywords = {{Alkali pre-treatment; Hemicellulose solubilisation; Oat hulls; Ultrasonication}},
language = {{eng}},
number = {{10}},
pages = {{5371--5381}},
publisher = {{Springer Science and Business Media B.V.}},
series = {{Waste and Biomass Valorization}},
title = {{Ultrasound Assisted Alkaline Pre‐treatment Efficiently Solubilises Hemicellulose from Oat Hulls}},
url = {{http://dx.doi.org/10.1007/s12649-021-01406-0}},
doi = {{10.1007/s12649-021-01406-0}},
volume = {{12}},
year = {{2021}},
}