Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1185531
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dc.contributor.authorROCHA, C. F.
dc.contributor.authorLENGOWSKI, E. C.
dc.contributor.authorSAMPAIO, N. M. F. M.
dc.contributor.authorNASCIMENTO, P. T. H. do
dc.contributor.authorZANONI, P. R. S.
dc.contributor.authorOLIVEIRA, P. R. de
dc.contributor.authorMAGALHAES, W. L. E.
dc.contributor.authorFONTANA, J. D.
dc.contributor.authorJÚNIOR, E. A. B.
dc.date.accessioned2026-03-18T23:24:14Z-
dc.date.available2026-03-18T23:24:14Z-
dc.date.created2026-03-17
dc.date.issued2026
dc.identifier.citationForests, v. 17, n. 3, 358, p. 1-14, 2026.
dc.identifier.issn1999-4907
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1185531-
dc.descriptionTo establish a biorefinery within kraft-pulp mills, the extraction of fermentable sugars must be balanced with the preservation of fiber quality for papermaking. This study investigates this trade-off by applying partial enzymatic hydrolysis to unbleached high-kappa eucalyptus kraft pulp to co-produce bioethanol and packaging-grade materials. Although the mass-transfer limitations inherent to the high-consistency strategy (15% solids or 150 g L−1) restrict extensive saccharification (keeping glucose conversion below 5% at 1.5 h), it naturally directs the process toward a low-severity regime essential for fiber conservation. Structural analysis (X-ray diffraction and microscopy) revealed that enzymes preferentially targeted amorphous regions, increasing crystallinity (from ≈74% to ≈82%) but reducing intrinsic fiber strength (tear) over time (dropping from ~5.6 to ~2.3 mN·m2·g−1 within 30 min). However, a strategic window for valorization has been identified. Instead of direct papermaking, hydrolyzed residue is highly effective as a strength-enhancing additive. When blended (20% w w−1) with commercial pulp, the modified fibers improved interfiber bonding, restored the tensile strength, and significantly increased the Burst Index (up to ~1.7 kPa·m2·g−1). These results demonstrate a viable industrial approach using partial hydrolysis to recover hemicellulose-based sugars for biofuels, while transforming the solid fraction into a high-performance reinforcement agent for paper packaging. This approach effectively converts a potential trade-off into a synergistic dual-product stream.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectHidrólise enzimática
dc.subjectPropriedades do papel
dc.titleHigh-kappa Eucalyptus kraft pulp in a biorefinery context: balancing sugar production with fiber-reinforcement potential.
dc.typeArtigo de periódico
dc.subject.thesagroCelulose
dc.subject.thesagroPapel
dc.subject.thesagroEmbalagem
dc.subject.thesagroPolimerização
dc.subject.thesagroCristalização
dc.subject.thesagroBiotecnologia
dc.subject.nalthesaurusEnzymatic hydrolysis
dc.subject.nalthesaurusPaper
dc.subject.nalthesaurusPackaging
dc.subject.nalthesaurusPolymerization
dc.subject.nalthesaurusBiotechnology
riaa.ainfo.id1185531
riaa.ainfo.lastupdate2026-03-18
dc.identifier.doihttps://doi.org/10.3390/f17030358
dc.contributor.institutionCLARISSA FLEURY ROCHA, UNIVERSIDADE FEDERAL TECNOLÓGICA DO PARANÁ; ELAINE CRISTINA LENGOWSKI, UNIVERSIDADE FEDERAL DO MATO GROSSO; NAIARA MARIANA FIORI MONTEIRO SAMPAIO, BRAZILIAN BIORENEWABLES NATIONAL LABORATORY; PRISCILA TIEMI HIGUTI DO NASCIMENTO, UNIVERSITY OF ALBERTA; PATRICIA RAQUEL SILVA ZANONI, CNPF; PAULO ROBERTO DE OLIVEIRA, UNIVERSIDADE FEDERAL TECNOLÓGICA DO PARANÁ; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; JOSÉ DOMINGOS FONTANA, UNIVERSIDADE FEDERAL TECNOLÓGICA DO PARANÁ; ERALDO ANTONIO BONFATTI JÚNIOR, UNIVERSIDADE DE SÃO PAULO.
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