Synergistic effect of bath-ultrasonication and heating treatments on two-steps treatment of brewers’ spent grain
: Naibaho, Joncer; Bobak, Łukasz; Wojdyło, Aneta; Korzeniowska, Małgorzata; Lu, Yuyun; Yang, Baoru
Publisher: Elsevier
: 2024
: Heliyon
: Heliyon
: e35166
: 10
: 15
: 2405-8440
DOI: https://doi.org/10.1016/j.heliyon.2024.e35166
: https://doi.org/10.1016/j.heliyon.2024.e35166
: https://research.utu.fi/converis/portal/detail/Publication/457325688
The study aimed to evaluate the chemical composition, antioxidant activity and techno-functionality of brewers’ spent grain (BSG) treated with two-steps treatment involving 5, 15, and 25 min bath-ultrasonication (USB) continued with autoclave (AH) at 90, 110, and 130 °C and/or water-bath (CWH) at 80, 90, and 100 °C. The two-steps treatments slightly affected the water- and oil-holding capacity and extractable fat content. Most of the two-steps treatments increased the amount of flavan-3-ols and phenolic acids, up to 4 times higher compared to its control. The two-steps treatment involving CWH had no significant (p > 0.05) impact on fat content, antioxidants and techo-functionality of BSG. Up to 15 min USB increased the poly-unsaturated fatty acids and lowered the amount of saturated fatty acids. In conclusion, the two-steps treatment consists of USB (up to 15 min) continued with AH and CWH increased the amount of nutritional-related chemical composition such as UFA and phenolic acids as well as antioxidant activity of BSG.
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This work was supported by UPWR 2.0, international and interdisciplinary program of development of Wrocław University of Environmental and Life Sciences, co-financed by the European Social Fund under the Operational Program Knowledge Education Development 2014–2020: Axis III Higher education for the economy and development; Action 3.5. Comprehensive program for schools of higher education ( POWR.03.05.00–00-Z062/18 ). It was also supported by ERA-NET CO-FUND Horizon 2020 - FACCE SURPLUS Sustainable and Resilient Agriculture for Food and Non-Food Systems and PROWASTE Protein-fibre biorefinery for scattered material streams (2019–2021).
