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Erschienen 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

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

Erschienen in: Cellulose | Ausgabe 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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Metadaten
Titel
Emulsifying properties of arabinoxylans derived from brewers’ spent grain by ultrasound-assisted extraction: structural and functional properties correlation
verfasst von
Liwei Liu
Moutong Chen
Teodora Emilia Coldea
Huirong Yang
Haifeng Zhao
Publikationsdatum
30.10.2022
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 1/2023
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-022-04912-z

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