Kinetics of Lime Pretreatment of Sugarcane Bagasse to Enhance Enzymatic Hydrolysis

dc.creatorFuentes, LLG
dc.creatorRabelo, SC
dc.creatorMaciel, R
dc.creatorCosta, AC
dc.date2011
dc.dateMAR
dc.date2014-07-30T14:35:56Z
dc.date2015-11-26T17:06:19Z
dc.date2014-07-30T14:35:56Z
dc.date2015-11-26T17:06:19Z
dc.date.accessioned2018-03-28T23:54:45Z
dc.date.available2018-03-28T23:54:45Z
dc.identifierApplied Biochemistry And Biotechnology. Humana Press Inc, v. 163, n. 5, n. 612, n. 625, 2011.
dc.identifier0273-2289
dc.identifierWOS:000287935000005
dc.identifier10.1007/s12010-010-9067-0
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/61008
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/61008
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1279817
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionThe objective of this work was to determine the optimum conditions of sugarcane bagasse pretreatment with lime to increase the enzymatic hydrolysis of the polysaccharide component and to study the delignification kinetics. The first stage was an evaluation of the influence of temperature, reaction time, and lime concentration in the pretreatment performance measured as glucose release after hydrolysis using a 2(3) central composite design and response surface methodology. The maximum glucose yield was 228.45 mg/g raw biomass, corresponding to 409.9 mg/g raw biomass of total reducing sugars, with the pretreatment performed at 90 degrees C, for 90 h, and with a lime loading of 0.4 g/g dry biomass. The enzymes loading was 5.0 FPU/dry pretreated biomass of cellulase and 1.0 CBU/dry pretreated biomass of beta-glucosidase. Kinetic data of the pretreatment were evaluated at different temperatures (60 degrees C, 70 degrees C, 80 degrees C, and 90 degrees C), and a kinetic model for bagasse delignification with lime as a function of temperature was determined. Bagasse composition (cellulose, hemicellulose, and lignin) was measured, and the study has shown that 50% of the original material was solubilized, lignin and hemicellulose were selectively removed, but cellulose was not affected by lime pretreatment in mild temperatures (60-90 degrees C). The delignification was highly dependent on temperature and duration of pretreatment.
dc.description163
dc.description5
dc.description612
dc.description625
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageen
dc.publisherHumana Press Inc
dc.publisherTotowa
dc.publisherEUA
dc.relationApplied Biochemistry And Biotechnology
dc.relationAppl. Biochem. Biotechnol.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectPretreatment of lignocellulosic biomass
dc.subjectSugarcane bagasse
dc.subjectKinetics of pretreatment
dc.subjectLime pretreatment
dc.subjectLignocellulosic Biomass
dc.subjectCorn Stover
dc.subjectDelignification
dc.subjectEthanol
dc.subjectLignin
dc.titleKinetics of Lime Pretreatment of Sugarcane Bagasse to Enhance Enzymatic Hydrolysis
dc.typeArtículos de revistas


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