1. RI UFLA
  2. Escola de Ciências Agrárias de Lavras - ESAL
  3. Departamento de Ciências Florestais - DCF
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Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/50122
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Campo DCValorIdioma
dc.creatorAraujo, Elesandra da Silva-
dc.creatorLorenço, Mário Sérgio-
dc.creatorZidanes, Uasmim Lira-
dc.creatorSousa, Thaís Brito-
dc.creatorMota, Graciene da Silva-
dc.creatorReis, Verena de Nazaré de Oliveira-
dc.creatorSilva, Marcela Gomes da-
dc.creatorMori, Fábio Akira-
dc.date.accessioned2022-06-07T21:52:24Z-
dc.date.available2022-06-07T21:52:24Z-
dc.date.issued2021-01-
dc.identifier.citationARAUJO, E. da S. et al. Quantification of the bark Myrcia eximia DC tannins from the Amazon rainforest and its application in the formulation of natural adhesives for wood. Journal of Cleaner Production, [S.I.], v. 280, part. 1, 124324, Jan. 2021. DOI: https://doi.org/10.1016/j.jclepro.2020.124324.pt_BR
dc.identifier.urihttps://doi.org/10.1016/j.jclepro.2020.124324pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/50122-
dc.description.abstractThe bark of the Myrcia eximia DC., tree which occurs in the Brazilian Amazon, was studied. The aim was to determine the yield of condensed tannins and their quality on formulation of natural adhesives for wood bonding. The extraction performance of tannins in water and sodium sulfite solution was compared. The tannins were characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). Adhesives based on Myrcia eximia tannins were produced and evaluated for their physicochemical properties and shear strength in the wet and dry glue line. The extracts of Myrcia eximia bark presented 25.2% of condensed tannins in water extraction and 32.6% in sodium sulfite solution (Na2SO3). In these two extraction conditions, the Stiasny index values indicated that Myrcia eximia tannins can be used in wood adhesive formulations. The properties of the natural adhesives allowed for good application on wood and the glue line shear tests showed important bonding properties of the adhesive with the wood in both evaluated conditions, reaching a resistance of 5.3 MPa and 87.5% of ruptures in the wood. We conclude that Myrcia eximia bark is a source of high levels of condensed tannins with quality for application in natural adhesives.pt_BR
dc.languageenpt_BR
dc.publisherElsevierpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceJournal of Cleaner Productionpt_BR
dc.subjectCondensed tanninspt_BR
dc.subjectAdhesives for woodpt_BR
dc.subjectFourier transform infrared spectroscopypt_BR
dc.subjectThermogravimetric analysispt_BR
dc.subjectGlue line shear testspt_BR
dc.subjectTaninos condensadospt_BR
dc.subjectAdesivos para madeirapt_BR
dc.subjectEspectroscopia no infravermelho por transformada de Fourierpt_BR
dc.subjectAnálise Termogravimétricapt_BR
dc.subjectCisalhamento na linha de cola - Testespt_BR
dc.titleQuantification of the bark Myrcia eximia DC tannins from the Amazon rainforest and its application in the formulation of natural adhesives for woodpt_BR
dc.typeArtigopt_BR
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