Effects on Lignin Redistribution in Eucalyptus globulus Fibres Pre-Treated by Steam Explosion: A Microscale Study to Cellulose Accessibility

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datacite.alternateIdentifier.citationBIOMOLECULES,Vol.11,,2021
datacite.alternateIdentifier.doi10.3390/biom11040507
datacite.creatorTroncoso-Ortega, Eduardo
datacite.creatorCastillo, Rosario del P.
datacite.creatorReyes-Contreras, Pablo
datacite.creatorCastano-Rivera, Patricia
datacite.creatorTeixeira Mendonca, Regis
datacite.creatorSchiappacasse, Nicolas
datacite.creatorParra, Carolina
datacite.date2021
datacite.subject.englishsteam explosion
datacite.subject.englishEucalyptus globulus
datacite.subject.englishlignin droplets
datacite.subject.englishenzymatic hydrolysis
datacite.subject.englishFT-IR imaging
datacite.subject.englishchemometric analysis
datacite.subject.english
datacite.titleEffects on Lignin Redistribution in Eucalyptus globulus Fibres Pre-Treated by Steam Explosion: A Microscale Study to Cellulose Accessibility
dc.date.accessioned2021-10-04T18:54:33Z
dc.date.available2021-10-04T18:54:33Z
dc.description.abstractThe objective of this study was to investigate structural changes and lignin redistribution in Eucalyptus globulus pre-treated by steam explosion under different degrees of severity (S-0), in order to evaluate their effect on cellulose accessibility by enzymatic hydrolysis. Approximately 87.7% to 98.5% of original glucans were retained in the pre-treated material. Glucose yields after the enzymatic hydrolysis of pre-treated material improved from 19.4% to 85.1% when S-0 was increased from 8.53 to 10.42. One of the main reasons for the increase in glucose yield was the redistribution of lignin as micro-particles were deposited on the surface and interior of the fibre cell wall. This information was confirmed by laser scanning confocal fluorescence and FT-IR imaging; these microscopic techniques show changes in the physical and chemical characteristics of pre-treated fibres. In addition, the results allowed the construction of an explanatory model for microscale understanding of the enzymatic accessibility mechanism in the pre-treated lignocellulose.
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/4355
dc.language.isoen
dc.publisherMDPI
dc.sourceBIOMOLECULES
oaire.resourceTypeWOS
oaire.resourceType.enArticle
uct.indizacionSCI
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