Evaluation of the effects of different chemical pretreatments in sugarcane bagasse on the response of enzymatic hydrolysis in batch systems subject to high mass loads

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dc.contributor.authorPaz-Cedeno, Fernando Roberto [UNESP]
dc.contributor.authorHenares, Lucas Ragnini [UNESP]
dc.contributor.authorSolorzano-Chavez, Eddyn Gabriel [UNESP]
dc.contributor.authorScontri, Mateus [UNESP]
dc.contributor.authorPicheli, Flávio Pereira [UNESP]
dc.contributor.authorMiranda Roldán, Ismael Ulises [UNESP]
dc.contributor.authorMonti, Rubens [UNESP]
dc.contributor.authorConceição de Oliveira, Samuel [UNESP]
dc.contributor.authorMasarin, Fernando [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-06-25T11:07:15Z
dc.date.available2021-06-25T11:07:15Z
dc.date.issued2021-03-01
dc.description.abstractIn the present study, sugarcane bagasse (SB) was subjected to different pretreatments. The pretreated SB was characterized chemically and structurally and was enzymatically hydrolyzed using a commercial enzyme preparation. Pretreatment with sulfite-NaOH was the most efficient for removing lignin while keeping cellulose intact. In addition, sulfite-NaOH pretreatment presented the best response to the enzymatic hydrolysis of cellulose and xylan, reaching conversions of 90%. The increase in consistency (≥10%) in the enzymatic hydrolysis of SB pretreated with sulfite-NaOH showed a loss of cellulose and xylan conversions efficiencies of 28 and 37%, respectively. However, enzymatic hydrolysis with a consistency of 20% resulted in a maximum rate of glucose and xylose formation of 8.5 and 3.0 g L−1 h−1, respectively, and an enzymatic hydrolysate containing 80 and 33 g L−1 of glucose and xylose, respectively. The enzymatic hydrolysis assay in a bioreactor with 20% consistency promoted faster liquefaction of SB, resulting in a higher maximum rate of glucose production (10.6 g L−1 h−1). The increase in the concentration and rate of formation of fermentable sugars in the enzymatic hydrolysate can partially avoid steps of concentration of the hydrolysate, resulting in less energy consumption and greater productivity of the bioproducts obtained from the hydrolysate, such as cellulosic ethanol (2G ethanol).en
dc.description.affiliationSão Paulo State University (UNESP) School of Pharmaceutical Sciences (FCF) Department of Bioprocess Engineering and Biotechnology
dc.description.affiliationUnespSão Paulo State University (UNESP) School of Pharmaceutical Sciences (FCF) Department of Bioprocess Engineering and Biotechnology
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent1-13
dc.identifierhttp://dx.doi.org/10.1016/j.renene.2020.10.092
dc.identifier.citationRenewable Energy, v. 165, p. 1-13.
dc.identifier.doi10.1016/j.renene.2020.10.092
dc.identifier.issn1879-0682
dc.identifier.issn0960-1481
dc.identifier.scopus2-s2.0-85096213992
dc.identifier.urihttp://hdl.handle.net/11449/208151
dc.language.isoeng
dc.relation.ispartofRenewable Energy
dc.sourceScopus
dc.subjectAlkaline pretreatment
dc.subjectBiomass hydrolysis
dc.subjectCellulase
dc.subjectHigh consistency
dc.subjectLignocellulosic biomass
dc.subjectXylanase
dc.titleEvaluation of the effects of different chemical pretreatments in sugarcane bagasse on the response of enzymatic hydrolysis in batch systems subject to high mass loadsen
dc.typeArtigo

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