| Title | Applications of Brewer's Spent Grain Hemicelluloses in Biorefineries: Extraction and Value-Added Product Obtention |
|---|---|
| ID_Doc | 20070 |
| Authors | Schmidt, AR; Dresch, AP; Junior, SLA; Bender, JP; Treichel, H |
| Title | Applications of Brewer's Spent Grain Hemicelluloses in Biorefineries: Extraction and Value-Added Product Obtention |
| Year | 2023 |
| Published | Catalysts, 13, 4 |
| Abstract | A circular economy is imperative for environmental sustainability. In this context, biorefineries stand out as a means of production able to reduce the carbon footprint and the impact of global warming. Biorefineries may employ lignocellulosic biomass from various plant sources to produce bioproducts with the potential to replace fossil derivatives through synthesis by microorganisms without competing with food crops. Brewer's spent grain (BSG), the residue of the brewery production process, is an option with potential for use, being a cheap raw material highly available throughout the year. The chemical composition of this biomass is quite variable, with significant amounts of hemicellulose, mainly consisting of xylose and arabinose monomers that can be technologically converted into value-added products such as xylooligosaccharides, xylitol, second-generation ethanol (2G ethanol), biofilms and furfural. To this end, catalysts are unusual in making biorefineries increasingly competitive in the market, selectively optimizing reactions and reducing the environmental impact of the production processes of these bioproducts. The present review addresses the primary methods for extracting and processing hemicelluloses from BSG using either biocatalysts (enzymes) or homogenous (acids, alkali, and salts) and heterogenous catalysts (solid acids and metal oxide) that can be used to pretreat the biomass and obtain the preferred byproducts. The state of the art of optimized catalysis mechanisms is also presented. |
| https://www.mdpi.com/2073-4344/13/4/755/pdf?version=1681712066 |
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