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dc.creatorSartori, Caroline-
dc.creatorMota, Graciene da Silva-
dc.creatorFerreira, Joana-
dc.creatorMiranda, Isabel-
dc.creatorMori, Fábio Akira-
dc.creatorPereira, Helena-
dc.date.accessioned2018-08-30T16:02:33Z-
dc.date.available2018-08-30T16:02:33Z-
dc.date.issued2016-
dc.identifier.citationSARTORI, C. et al. Chemical characterization of the bark of Eucalyptus urophylla hybrids in view of their valorization in biorefineries. Holzforschung, Berlin, v. 70, n. 9, p. 819-828, 2016.pt_BR
dc.identifier.urihttps://www.degruyter.com/view/j/hfsg.2016.70.issue-9/hf-2015-0258/hf-2015-0258.xmlpt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/30269-
dc.description.abstractEucalyptus 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.pt_BR
dc.languageen_USpt_BR
dc.publisherDe Gruyterpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceHolzforschungpt_BR
dc.subjectAnti-oxidantspt_BR
dc.subjectEucalyptus urophylla hybridspt_BR
dc.subjectLipophilic extractspt_BR
dc.subjectPhenolic extractspt_BR
dc.subjectAntioxidantespt_BR
dc.subjectHíbridos de Eucalyptus urophyllapt_BR
dc.subjectExtratos lipofílicospt_BR
dc.subjectExtratos fenólicospt_BR
dc.titleChemical characterization of the bark of Eucalyptus urophylla hybrids in view of their valorization in biorefineriespt_BR
dc.typeArtigopt_BR
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