An integrated approach to obtain xylo-oligosaccharides from sugarcane straw: From lab to pilot scale

Autor(es)

Brenelli, Livia B. ^{[1, 2]} ; Figueiredo, Fernanda L. ^[3] ; Damasio, Andre ^[3] ; Franco, Telma T. ^[1] ; Rabelo, Sarita C. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Interdisciplinary Ctr Energy Planning, Cora Coralina 330, Campinas, SP - Brazil

^[2] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Biorenewables Natl Lab LNBR, Giuseppe Maximo Scolfaro 10-000, Campinas, SP - Brazil

^[3] Univ Estadual Campinas, Inst Biol, Dept Biochem & Tissue Biol, UNICAMP, Campinas, SP - Brazil

^[4] Sao Paulo State Univ, Coll Agr Sci, Dept Bioproc & Biotechnol, UNESP, Ave Univ, 3780 Altos do Paraiso, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Bioresource Technology; v. 313, OCT 2020.
• Citações Web of Science: 0

Resumo

Sugarcane straw (SS) is a widely available agricultural processing feedstock with the potential to produce 2nd generation bioethanol and bioproducts, in addition to the more conventional use for heat and/or electrical power generation. In this study, we investigated the operational parameters to maximize the production of xylo-oligosaccharides (XOS) using mild deacetylation, followed by hydrothermal pretreatment. From the laboratory to the pilot-scale, the optimized two-stage pretreatment promoted 81.5% and 70.5% hemicellulose solubilization and led to XOS yields up to 9.8% and 9.1% (w/w of initial straw), respectively. Moreover, different fungal xylanases were also tested to hydrolyze XOS into xylobiose (X2) and xylotriose (X3). GH10 from Aspergillus nidulans performed better than GH11 xylanases and the ratio of the desired products (X2 + X3) increased to 72% due to minimal monomeric sugar formation. Furthermore, a cellulose-rich fraction was obtained, which can be used in other high value-added applications, such as for the production of cello-oligomers. (AU)

• Processo FAPESP: 17/15477-8 - Desenvolvimento de um processo de pré-tratamento de baixa severidade para produção de oligossacarídeos de palha de cana-de-açúcar
• Beneficiário: Lívia Beatriz Brenelli de Paiva
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 15/50612-8 - An integrated approach to explore a novel paradigm for biofuel production from lignocellulosic feedstocks
• Beneficiário: Telma Teixeira Franco
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 17/22669-0 - N-glicosilação e secreção de enzimas em fungos filamentosos
• Beneficiário: André Ricardo de Lima Damasio
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular