Improved Efficiency of Brewer’s Spent Grain Arabinoxylans by Ultrasound-Assisted Extraction

Authors

Sofia Reis, Technological University DublinFollow
Elisabete Coelho, Universidade de AveiroFollow
Manuel Coimbra, Universidade de AveiroFollow
Nissreen Abu-Ghannam, Technological University DublinFollow

Document Type

Article

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Publication Details

Ultrasonics Sonochemistry, 24, pp.155-164

Abstract

Arabinoxylan (AX) rich extracts from brewer’s spent grain (BSG) were produced by the application of ultrasound-assisted extraction (UAE) and conventional alkaline extraction (AKE). UAE and AKE were optimised for the production of the highest yield of ethanol insoluble material using response surface methodology (RSM). The efficiency of UAE was established by the significant reduction of time (7h to 25 min) and energy when compared to AKE, to recover similar amount of AX (60%) from BSG, leading to the production of starch-free AX-rich extracts.

DOI

https://doi.org/10.1016/j.ultsonch.2014.10.010

Recommended Citation

Reis, S.F. et al. (2015) Improved efficiency of brewer’s spent grain arabinoxylans by ultrasound-assisted extraction. Ultrasonics Sonochemistry, 24, pp.155-164. doi:10.1016/j.ultsonch.2014.10.010

Funder

Irish Department of Agriculture, Food and the Marine