1. Repositório Institucional da UFMG
  2. Publicações Científicas e Culturais
  3. Artigo de Periódico
Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/53740
Full metadata record
DC FieldValueLanguage
dc.creatorAugusta Cerceau Isaac Netapt_BR
dc.creatorSilvio Silvério da Silvapt_BR
dc.creatorFelipe Antonio Fernandes Antunespt_BR
dc.creatorRodolfo Conti Barretopt_BR
dc.creatorLuciano Andrey Montoropt_BR
dc.creatorÂngelo Malachias de Souzapt_BR
dc.creatorPatrícia Massara Martinellipt_BR
dc.creatorGregory Thomas Kittenpt_BR
dc.creatorHenning Markötterpt_BR
dc.creatorIngo Mankept_BR
dc.date.accessioned2023-05-22T16:12:16Z-
dc.date.available2023-05-22T16:12:16Z-
dc.date.issued2018-02-16-
dc.citation.volume114pt_BR
dc.citation.spage19pt_BR
dc.citation.epage27pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.indcrop.2018.01.028pt_BR
dc.identifier.issn1872-633Xpt_BR
dc.identifier.urihttp://hdl.handle.net/1843/53740-
dc.description.resumoSeveral pretreatment strategies focus on the removal of a significant part of lignin from plant cell walls, as it is considered the main barrier to the process of deconstructing biomass to simple sugars by hydrolytic enzymes. The ability to chemically differentiate and spatially locate lignins across cell walls provides an important contribution to the effort to improve these processes. Here, we present a novel approach using synchrotron phase-contrast tomography to probe the physicochemical features of plant cell walls. In addition to the 3D cellular architecture, the distribution of dense packed lignin–carbohydrate complexes (or, simply dense lignin) over larger regions and within cell walls has been successfully provided. We examined in particular the effect of the sequential H2SO4 and NaOH pretreatment on sugacane bagasse. Our results revealed that aggregates of dense lignin form elongated 3D structures in cell corners (CC) following the orientation of the sclerenchyma fibers; a remarkable result in the light of the conventional perception that lignin particles are discrete and roughly spherical. After the acid pretreatment, a considerable fraction of the dense lignin primarily located in CCs was removed; and it was further dissolved with the subsequent alkali treatment. Unexpectedly, the two-step pretreatment did not contribute to the cellulose accessibility in terms of available surface area and porosity. This study provides new insights into the underlying mechanisms of biomass deconstruction by pretreatments; and the approach established here can be extended to other systems relevant to the bioenergy and biotechnology arenas.pt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipFAPESP - Fundação de Amparo à Pesquisa do Estado de São Paulopt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICApt_BR
dc.publisher.departmentICB - DEPARTAMENTO DE MORFOLOGIApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofIndustrial Crops and Products-
dc.rightsAcesso Restritopt_BR
dc.subjectLigninpt_BR
dc.subjectBiofuelpt_BR
dc.subjectPhase-contrast tomographypt_BR
dc.subjectSynchrotron radiationpt_BR
dc.subjectSugarcane bagassept_BR
dc.subject.otherLigninapt_BR
dc.subject.otherBiocombustíveispt_BR
dc.subject.otherRadiação sincrotrônicapt_BR
dc.subject.otherBagaço de canapt_BR
dc.titleUnveiling 3D physicochemical changes of sugarcane bagasse during sequential acid/alkali pretreatments by synchrotron phase-contrast imagingpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0926669018300281pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-8617-0956pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0669-2784pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5157-3971pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8703-4283pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4044-9932pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-3464-6793pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9795-5345pt_BR
Appears in Collections:Artigo de Periódico

Files in This Item:
There are no files associated with this item.
Show simple item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.