2026-04-20T14:35:04Zhttps://riubu.ubu.es/oai/request
oai:riubu.ubu.es:10259/74732025-02-11T01:05:13Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245
Repositorio Institucional de la Universidad de Burgos author Alonso Riaño, Patricia author Ramos, Claudete Gindri author Trigueros Andrés, Ester author Beltrán Calvo, Sagrario author Sanz Díez, Mª Teresa 2023-03-01T08:45:12Z 2023-03-01T08:45:12Z 2023-01 0926-6690 http://hdl.handle.net/10259/7473 10.1016/j.indcrop.2022.115927 The feasibility of an industrial-scale subcritical water (SW) system by scaling up from laboratory to pilot scale in a discontinuous operation mode has been investigated regarding the valorization of brewer´s spent grain (BSG). The subcritical water treatment (SWT) of BSG at the pilot scale in a discontinuous mode at 170 ◦C and 22 min, resulted in the release of 56% of the total carbohydrates present in the BSG. A total pentose yield of 78% was achieved (18% as monomer and 82% as oligomer). The concentration of inhibitors in the hydrolysate was relatively low, 0.22 g/L, 0.31 g/L, and 0.13 g/L of furfural and acetic and formic acids respectively. Other highvalue compounds were obtained, such as 6.5 g peptides/L (64% protein yield), 21 mg free amino acids/g protein (2.17% aa yield), and a total phenolic content (TPC) of 17.84 mg GAE/g dry BSG. In general, the results showed good reproducibility when scaling up from laboratory to pilot SW process. Good reproducibility of the scale-up was found for the release yield of arabinoxylo-oligomers, and gluco-oligomers from BSG, also for the protein yield and the release of free amino acids. However, the xylo-oligomers yield was 13% higher at the lab scale than at the pilot scale and higher concentrations of monomers and phenolic compounds were found in the SW hydrolysates obtained at the lab scale. Differences in the preheating time in both systems seem to have an effect on the hydrolysis yield of some the biopolymers. SWT modified the composition of the residual solid, as a decrease in the concentration of hemicellulose and an increase in the glucan content was observed, which may enhance the digestibility of the solid improving a further enzymatic release of glucose from the remaining solid. eng Atribución 4.0 Internacional Subcritical water treatment Scale-up Carbohydrates Protein Phenolic compounds Brewer's spent grain Study of subcritical water scale-up from laboratory to pilot system for brewer’s spent grain valorization info:eu-repo/semantics/article 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 URL https://riubu.ubu.es/bitstream/10259/7473/5/Alonso-icp_2023.pdf File MD5 d9513f9270cdc362d3e0ee1b3d1674a8 1656951 application/pdf Alonso-icp_2023.pdf