dc.creatorMagaton, Andréia da Silva
dc.creatorPiló- Veloso, Dorila
dc.creatorColodette, Jorge Luiz
dc.date2019-05-23T11:27:12Z
dc.date2019-05-23T11:27:12Z
dc.date2008
dc.date.accessioned2023-09-27T21:15:42Z
dc.date.available2023-09-27T21:15:42Z
dc.identifier1678-7064
dc.identifierhttp://dx.doi.org/10.1590/S0100-40422008000500027
dc.identifierhttp://www.locus.ufv.br/handle/123456789/25397
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8957527
dc.descriptionThe O-acetyl-4-O-methyl-(glucurono)xylans were isolated from E. urograndis by extraction with dimethyl sulfoxide, analysed for monosaccharide composition and structurally characterized by NMR spectroscopy. These xylans contained one 4-O-methyl-glucuronic acid substituent and 5.5 acetyl groups for approximately 10 xylose residues. About 10% of 4-O-methyl-glucuronic acid (MeGlcA) units were branched at O-2. The O-acetyl-4-O-methyl-(glucurono)-xylans were composed of the following (1 → 4)-linked β-D-xylopyranosyl structural elements: unsubstituted (51 mol%), 2-O-acetylated (12 mol%), 3-O-acetylated (20 mol%), 2,3-di-O-acetylated (6 mol%) and [MeGlcA α-(1 → 2)] [3-O-acetylated] (11 mol%). The weight-average molar mass and polydispersity of this xylan were 34.9 kDa and 1.16, respectively, as measured by size-exclusion chromatography.
dc.formatpdf
dc.formatapplication/pdf
dc.languagepor
dc.publisherQuímica Nova
dc.relationV. 31, N. 5, P. 1085- 1088, 2008
dc.rightsOpen Access
dc.subjectEucalyptus urograndis
dc.subjectXylans
dc.subjectNMR
dc.titleCaracterização das O- acetil-( 4- O- metilglicurono) xilanas isoladas da madeira de Eucalyptus urograndis
dc.typeArtigo


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