Pseudo-Lignin Content Decreased with Hemicellulose and Lignin Removal, Improving Cellulose Accessibility, and Enzymatic Digestibility

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorQuality and Technology (Inmetro)-
Autor(es): dc.creatorSchmatz, Alison Andrei [UNESP]-
Autor(es): dc.creatorSalazar-Bryam, Ana Maria [UNESP]-
Autor(es): dc.creatorContiero, Jonas [UNESP]-
Autor(es): dc.creatorSant’Anna, Celso-
Autor(es): dc.creatorBrienzo, Michel [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:35:18Z-
Data de disponibilização: dc.date.available2022-02-22T00:35:18Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s12155-020-10187-8-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/202055-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/202055-
Descrição: dc.descriptionThe sugarcane bagasse is a heterogeneous material and needs a pretreatment to breakdown its complex structure to make cellulose accessible to enzyme action. This study aimed to evaluate pseudo-lignin formation, enzymatic hydrolysis of sugarcane fractions (leaf, external fraction, internode, and node), and bagasse after partial delignification and acid pretreatment. The leaf and external fraction presented the highest content of lignin, and external fraction was the most recalcitrant material resulting in lower glucose release. Pretreatment with diluted sulfuric acid (20% m/m or 2% m/v) generated 5 g/L of acetic acid and 2.07 g/L of 5-hydroxymethylfurfural (external fraction in natura and leaf extractive-free, respectively). Furfural ranged between 0.11 g/L (node delignified) and 0.06 g/L (leaf, external fraction, and node in natura). A decrease was observed in pseudo-lignin formed with extractive-free and delignified biomasses, with different structure compared with non-delignified samples. The biomass partial delignification and subsequent pretreatment with dilute acid generate a material with fragmented anatomical structure, with improved cellulose accessibility, favoring enzymatic hydrolysis achieving more than 90% of glucose yield (up to 12 g/L). This study has shown strategies to decrease material heterogeneity and avoid pseudo-lignin formation as it results in lower recalcitrance and better efficiency of the enzymatic hydrolysis.-
Descrição: dc.descriptionInstitute for Research in Bioenergy (IPBEN) São Paulo State University (UNESP)-
Descrição: dc.descriptionLaboratory of Microscopy Applied to Life Science(Lamav) National Institute of Metrology Quality and Technology (Inmetro)-
Descrição: dc.descriptionInstitute for Research in Bioenergy (IPBEN) São Paulo State University (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationBioenergy Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCellulose-
Palavras-chave: dc.subjectDiluted acid pretreatment-
Palavras-chave: dc.subjectExtractives-
Palavras-chave: dc.subjectGlucose-
Palavras-chave: dc.subjectSugarcane fraction-
Título: dc.titlePseudo-Lignin Content Decreased with Hemicellulose and Lignin Removal, Improving Cellulose Accessibility, and Enzymatic Digestibility-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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