Quick preparative separation of natural naphthopyranones with antioxidant activity by high-speed counter-current chromatography
Carregando...
Fontes externas
Fontes externas
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Artigo
Direito de acesso
Acesso aberto
Fontes externas
Fontes externas
Resumo
The 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.
Descrição
Palavras-chave
Antioxidant Activity High-Speed Counter-Current Chromatography Naphthopyranone Glycosides Antioxidants Brazil Chromatography, High Pressure Liquid Chromatography, Thin Layer Countercurrent Distribution Eriocaulaceae Ethanol Free Radicals Glycosides Heterocyclic Compounds, 3-Ring Naphthalenes Plant Extracts Pyrones Paepalanthus
Idioma
Inglês
Citação
Zeitschrift fur Naturforschung - Section C Journal of Biosciences, v. 57, n. 11-12, p. 1051-1055, 2002.
