Chemical characterization of the bark of Eucalyptus urophylla hybrids in view of their valorization in biorefineries

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorSartori, Caroline-
Autor(es): dc.creatorMota, Graciene da Silva-
Autor(es): dc.creatorFerreira, Joana-
Autor(es): dc.creatorMiranda, Isabel-
Autor(es): dc.creatorMori, Fábio Akira-
Autor(es): dc.creatorPereira, Helena-
Data de aceite: dc.date.accessioned2026-02-09T11:33:58Z-
Data de disponibilização: dc.date.available2026-02-09T11:33:58Z-
Data de envio: dc.date.issued2018-08-30-
Data de envio: dc.date.issued2018-08-30-
Data de envio: dc.date.issued2016-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/30269-
Fonte completa do material: dc.identifierhttps://www.degruyter.com/view/j/hfsg.2016.70.issue-9/hf-2015-0258/hf-2015-0258.xml-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1142499-
Descrição: dc.descriptionEucalyptus urophylla hybrids are important raw materials for the forest industry in Brazil, and large quantities of barks are available at mill site that may be used for added-value products. The chemical composition of barks of six commercial hybrids clones of E. urophylla×E. grandis, E. urophylla×E. Camaldulensis, and undisclosed E. urophylla hybrids was studied. The hybrids had similar composition, on average (data based on oven dry bark): 16% extractives, mainly corresponding to polar compounds that are soluble in ethanol and water, 19% lignin, 47% polysaccharides, 1% suberin, and 2% ash. The polysaccharides consists mainly of cellulose as indicated by 84% of total neutral monosaccharides in the acid hydrolysate and 10% xylose. The compositions of the lipophilic extracts was determined by GC-MS before and after alkaline hydrolysis. In all the barks, fatty acids, and triterpenes (namely: betulinic and ursolic acids) were the most abundant compounds followed by smaller amounts of sterols, long-chain aliphatic alcohols, phenolic acids, and acylglycerols. The ethanol-water bark extract had a high phenolic content: total phenolics ranged 211–551 mg gallic acid equivalents (GAE) g-1 of extract, tannins 76–184 mg catechin equivalents (CE) g-1 extract, and flavonoids 98–234 mg CE g-1 of extract. The antioxidant activity corresponds to 338 mg Trolox g-1 of extract. Development of high-value products is proposed through an integrated biorefinery approach including valorisation of extractives and targeting for cellulose-based applications.-
Idioma: dc.languageen-
Publicador: dc.publisherDe Gruyter-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceHolzforschung-
Palavras-chave: dc.subjectAnti-oxidants-
Palavras-chave: dc.subjectEucalyptus urophylla hybrids-
Palavras-chave: dc.subjectLipophilic extracts-
Palavras-chave: dc.subjectPhenolic extracts-
Palavras-chave: dc.subjectAntioxidantes-
Palavras-chave: dc.subjectHíbridos de Eucalyptus urophylla-
Palavras-chave: dc.subjectExtratos lipofílicos-
Palavras-chave: dc.subjectExtratos fenólicos-
Título: dc.titleChemical characterization of the bark of Eucalyptus urophylla hybrids in view of their valorization in biorefineries-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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