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dc.contributor.authorLeitão, Gilda G.
dc.contributor.authorLeitão, Suzana G.
dc.contributor.authorVilegas, Wagner [UNESP]
dc.date.accessioned2014-05-27T11:20:31Z
dc.date.available2014-05-27T11:20:31Z
dc.date.issued2002-11-01
dc.identifierhttp://www.znaturforsch.com/ac/v57c/s57c1051.pdf
dc.identifier.citationZeitschrift fur Naturforschung - Section C Journal of Biosciences, v. 57, n. 11-12, p. 1051-1055, 2002.
dc.identifier.issn0939-5075
dc.identifier.urihttp://hdl.handle.net/11449/67016
dc.description.abstractThe natural naphthopyranones paepalantine (1), paepalantine-9O-β-D-glucopyranoside (2) and paepalantine-9-O-β-D-allopyranosyl-(1→6)-O-β-D-glucopyranoside (3) were separated in a preparative scale from the ethanolic extract of the capitula of Paepalanthus bromelioides by high-speed counter-current chromatography (HSCCC). The solvent system used was composed of water-ethanol-ethyl acetate-hexane (10:4:10:4, v/v/v/v). This technique led to the separation of the three different naphthopyranone glycosides in pure form in approximately 7 hours. Paepalantine showed a good antioxidant activity when assayed by the DPPH radical spectrophotometric assay.en
dc.format.extent1051-1055
dc.language.isoeng
dc.relation.ispartofZeitschrift fur Naturforschung - Section C Journal of Biosciences
dc.sourceScopus
dc.subjectAntioxidant Activity
dc.subjectHigh-Speed Counter-Current Chromatography
dc.subjectNaphthopyranone Glycosides
dc.subjectAntioxidants
dc.subjectBrazil
dc.subjectChromatography, High Pressure Liquid
dc.subjectChromatography, Thin Layer
dc.subjectCountercurrent Distribution
dc.subjectEriocaulaceae
dc.subjectEthanol
dc.subjectFree Radicals
dc.subjectGlycosides
dc.subjectHeterocyclic Compounds, 3-Ring
dc.subjectNaphthalenes
dc.subjectPlant Extracts
dc.subjectPyrones
dc.subjectPaepalanthus
dc.titleQuick preparative separation of natural naphthopyranones with antioxidant activity by high-speed counter-current chromatographyen
dc.typeArtigo
dc.contributor.institutionUniversidade Federal do Rio de Janeiro (UFRJ)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationNucleo de Pesq. de Produtos Naturais UFRJ, Rio de Janeiro, RJ
dc.description.affiliationFaculdade de Farmácia Depto. de Produtos Naturais e A. UFRJ, Rio de Janeiro, RJ
dc.description.affiliationInstituto de Quim. de Araraquara UNESP Depto. de Quim. Organica, CP 355, 14801-1970 Araraquara, SP
dc.description.affiliationUnespInstituto de Quim. de Araraquara UNESP Depto. de Quim. Organica, CP 355, 14801-1970 Araraquara, SP
dc.identifier.wosWOS:000181126300018
dc.rights.accessRightsAcesso aberto
dc.identifier.scopus2-s2.0-0036875343
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
dc.identifier.file2-s2.0-0036875343.pdf
dc.identifier.orcid0000-0003-3032-2556
unesp.author.orcid0000-0003-3032-2556[3]
dc.relation.ispartofjcr0.882
dc.relation.ispartofsjr0,288
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