Quick preparative separation of natural naphthopyranones with antioxidant activity by high-speed counter-current chromatography

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorLeitão, Gilda G.
dc.creatorLeitão, Suzana G.
dc.creatorVilegas, Wagner
dc.date2014-05-27T11:20:31Z
dc.date2016-10-25T18:18:03Z
dc.date2014-05-27T11:20:31Z
dc.date2016-10-25T18:18:03Z
dc.date2002-11-01
dc.date.accessioned2017-04-06T01:03:31Z
dc.date.available2017-04-06T01:03:31Z
dc.identifierZeitschrift fur Naturforschung - Section C Journal of Biosciences, v. 57, n. 11-12, p. 1051-1055, 2002.
dc.identifier0939-5075
dc.identifierhttp://hdl.handle.net/11449/67016
dc.identifierhttp://acervodigital.unesp.br/handle/11449/67016
dc.identifierWOS:000181126300018
dc.identifier2-s2.0-0036875343.pdf
dc.identifier2-s2.0-0036875343
dc.identifierhttp://www.znaturforsch.com/ac/v57c/s57c1051.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/888511
dc.descriptionThe 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.
dc.languageeng
dc.relationZeitschrift fur Naturforschung - Section C Journal of Biosciences
dc.rightsinfo:eu-repo/semantics/openAccess
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 chromatography
dc.typeOtro


Este ítem pertenece a la siguiente institución