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Published in: Cellulose 1/2023

30-10-2022 | Original Research

Emulsifying properties of arabinoxylans derived from brewers’ spent grain by ultrasound-assisted extraction: structural and functional properties correlation

Authors: Liwei Liu, Moutong Chen, Teodora Emilia Coldea, Huirong Yang, Haifeng Zhao

Published in: Cellulose | Issue 1/2023

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Abstract

Ultrasound-assisted extraction (UAE) was used to obtain arabinoxylan (AX) from brewers’ spent grain (BSG) with a higher yield, altered structural characteristics, and improved techno-functional properties. Results showed that an UAE procedure working at 400 W for 15 min under a 60% duty cycle could increase the AX yield by 52.41% compared with a traditional alkaline extraction without sonication. Concomitantly, UAE-AX developed a degraded Mw of 2741 kDa, a changed conformation of less molecular asymmetry and a decreased mean particle size from 12.56 to 4.993 μm. The rheological properties of UAE-AX aqueous solution were improved, leading to higher viscosity and gel-forming capacity of the AX stabilized emulsions. As a result, UAE-AX addition could reduce the mean droplet size to 6.40 μm and better stabilize the emulsion under various conditions than traditional alkaline extracted AX. Thus, the results proved UAE to be a promising method for extracting AX with increased emulsifying capacity from BSG.

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Appendix
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Literature
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Metadata
Title
Emulsifying properties of arabinoxylans derived from brewers’ spent grain by ultrasound-assisted extraction: structural and functional properties correlation
Authors
Liwei Liu
Moutong Chen
Teodora Emilia Coldea
Huirong Yang
Haifeng Zhao
Publication date
30-10-2022
Publisher
Springer Netherlands
Published in
Cellulose / Issue 1/2023
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-022-04912-z

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