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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Subcritical water hydrolysis of brewer's spent grains: Selective production of hemicellulosic sugars (C-5 sugars)

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Torres-Mayanga, P. C. [1] ; Azambuja, S. P. H. [1] ; Tyufekchiev, M. [2] ; Tompsett, G. A. [2] ; Timko, M. T. [2] ; Goldbeck, R. [1] ; Rostagno, M. A. [3] ; Forster-Carneiro, T. [1]
Total Authors: 8
[1] Univ Campinas UNICAMP, Sch Food Engn, Rua Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil
[2] Worcester Polytech Inst, Dept Chem Engn, 100 Inst Rd, Goddard Hall 123, Worcester, MA 01609 - USA
[3] Univ Campinas UNICAMP, Sch Appl Sci, Rua Pedro Zaccaria 1300, BR-13484350 Limeira, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF SUPERCRITICAL FLUIDS; v. 145, p. 19-30, MAR 2019.
Web of Science Citations: 1

The objective of this work was to produce C-5 sugars from the hydrolysis of the spent grains of the brewery. The total sugar recovery and formation of by-products were evaluated as a function of the reaction temperature (140, 160, 180 and 210 degrees C), flow rate (10 and 20 mL min(-1)) and the solvent/feed ratio (S/F: 64, 80 and 112). The total carbohydrate yields were dependent on the hydrolysis temperature. Arabinose was the main product, followed by xylose and the arabinose yield increased with increasing the S/F ratio and the flow rate. Yields of furfural were sensitive to flow rate. The hemicellulose content of the residual solids was reduced by approximately 90% after hydrolysis, with the parallel formation of carbonyl and carbonized species. The effects of flow rate on the efficiency of converting hemicellulose into simple sugars were complex, suggesting roles for the formation of autocatalytic acids. (AU)

FAPESP's process: 18/05999-0 - WASTE2ENERGY: integration of the supercritical and anaerobic digestion technologies for the management of water and food waste
Grantee:Tânia Forster Carneiro
Support type: Regular Research Grants
FAPESP's process: 11/19817-1 - Biorefinery in agricultural and food industry: recycling waste for production of new chemicals componds and biohydrogen
Grantee:Tânia Forster Carneiro
Support type: Program for Research on Bioenergy (BIOEN) - Young Investigators Grants
FAPESP's process: 16/04602-3 - Development of Saccharomyces cerevisiae strains through heterologous expression of cellulases and evolutionary engineering aiming for simultaneous saccharification and fermentation of lignocellulosic biomass
Grantee:Rosana Goldbeck
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 13/04304-4 - Development of integrated systems for the analysis of bioactive compounds in natural products employing supercritical technology
Grantee:Maurício Ariel Rostagno
Support type: Research Grants - Young Investigators Grants