Sugarcane bagasse pretreated by different technologies used as support and carbon source in solid-state fermentation by Aureobasidium pullulans LB83 to produce bioemulsifier

Autor(es)

da Costa, Rogger Alessandro Mata ; Rubio-Ribeaux, Daylin ; Carneiro, Bruna Curry ; Franco, Paulo Marcelino ; Mendes, Geissy de Azevedo ; da Silva, Isis Lee ; dos Anjos, Virgilio de Carvalho ; dos Santos, Julio Cesar ; Tiso, Till ; da Silva, Silvio Silverio

• Tipo de documento: Artigo Científico
• Fonte: BIOMASS CONVERSION AND BIOREFINERY; v. N/A, p. 14-pg., 2023-02-10.

Resumo

Bioemulsifier production by Aureobasidium pullulans LB83 from pretreated sugarcane bagasse was evaluated in solid-state fermentation. Alkaline (0.2 mol.L-1 NaOH; 12 min) and hydrodynamic cavitation (0.5 mol.L-1 NaOH, 25 min) pretreatments showed a maximum lignin removal of 55.1 % and 44.7 %, respectively. Pretreatment biomass effectivity was assessed by X-ray diffraction, FT-MIR, FTIR-NIR, and RAMAN techniques. Maximum kerosene emulsification indexes of 65.8 % and 41.3 % were obtained in solid-state fermentation, respectively, for alkaline and hydrodynamic cavitation pretreated sugarcane bagasse. Synthesis of cellulases was observed in fermentation, showing maximum values of endoglucanase and exoglucanase, respectively, of 2.25 U.g(-1) and 1.39 U.g(-1), for alkaline pretreated sugarcane bagasse, and 2.43 U.g(-1) and 1.45 U.g(-1), for hydrodynamic cavitation-pretreated sugarcane bagasse. The biomolecule was characterized as a mixture of mannitol and arabitol-type liamocin. Microorganism was able to produce bioemulsifier using sugarcane bagasse as support and carbon source in solid-state fermentation, thus showing the potential of this system to obtain value-added products from this biomass. (AU)

• Processo FAPESP: 16/10636-8 - Da fábrica celular à biorrefinaria integrada Biodiesel-Bioetanol: uma abordagem sistêmica aplicada a problemas complexos em micro e macroescalas
• Beneficiário: Roberto de Campos Giordano
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático
• Processo FAPESP: 20/06323-0 - Produção de biossurfactantes por fermentação em estado sólido utilizando Aureobasidium pullulans com emprego de bagaço de cana-de-açúcar como substrato: do pré-tratamento da biomassa ao design de biorreatores
• Beneficiário: Daylin Rubio Ribeaux
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado