Deconstructing sugarcane bagasse lignocellulose by acid-based deep eutectic solvents to enhance enzymatic digestibility

Autor(es)

Guadalupe Moran-Aguilar, Maria ; Calderon-Santoyo, Montserrat ; de Souza Oliveira, Ricardo Pinheiro ; Guadalupe Aguilar-Uscanga, Maria ; Manuel Dominguez, Jose

• Tipo de documento: Artigo Científico
• Fonte: Carbohydrate Polymers; v. 298, p. 8-pg., 2022-12-15.

Resumo

Biorefinery with deep eutectic solvent (DES) is an emerging processing technology to overcome the shortcomings of conventional biomass pretreatments. This work evaluates the biorefinery of sugarcane bagasse (SCB) with DES formulated with choline chloride as hydrogen bond acceptor and three hydrogen bond donors: lactic acid, citric acid, and acetic acid. Acetic acid showed unique ionic properties responsible for the selective removal of lignin and the deconstruction of cellulose to improve the digestibility of up to 97.61 % of glucan and 63.95 % of xylan during enzymatic hydrolysis. In addition, the structural characteristics of the polysaccharide-rich material (PRM) were analyzed by X-rays, ATR-FTIR, SEM, and enzymatic hydrolysis, and compared with the original material sample, for a comprehensive understanding of biomass deconstruction using different hydrogen bond donors (HBD) as DES pretreatment. (AU)

• Processo FAPESP: 18/25511-1 - Bioprospecção de bactérias probióticas bacteriocinogênicas: da otimização do cultivo à aplicação em sistemas de produção animal
• Beneficiário: Ricardo Pinheiro de Souza Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 21/15138-4 - Biorrefinaria de resíduos de cervejaria para obtenção de substâncias biologicamente ativas para a prevenção e tratamento da SARS-CoV-2 e para o seu emprego como conservantes naturais de alimentos
• Beneficiário: Ricardo Pinheiro de Souza Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional