In vitro 5-LOX inhibitory and antioxidant activities of extracts and compounds from the aerial parts of Lopholaena coriifolia (Sond.) E. Phillips & C.A. Sm

J Complement Integr Med. 2012 Jun 20:9:Article 11. doi: 10.1515/1553-3840.1615.

Abstract

The aim of this study was to investigate the antioxidant and anti-inflammatory potentials of crude extracts of Lopholaena coriifolia (Sond.) E. Phillips & C.A. Sm. and its isolated compounds. Separation and structure elucidation of Lopholaena coriifolia (Sond.) E. Phillips & C.A. Sm. were conducted using chromatographic and spectroscopic method. The antioxidant activities of the extracts in this study were determined by the ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH) and β-carotene bleaching assays meanwhile the anti-inflammatory activity was evaluated using the 5-lipoxygenase assay. Seven known compounds quercetin 3-O-glucoside (1), naringenin 7-O-glucoside (2), seneciphylline-O-glucoside (3), chrysoeriol (4), retrorsine (5), adonifiline (6) and 5,4'-di-O-methyl alpinumisoflavone (7) were isolated from ethanol extract of Lopholaena coriifolia (Sond.) E. Phillips & C.A. Sm. The ethanol and water extracts of Lopholaena coriifolia (Sond.) E. Phillips & C.A. Sm. elicited potent antioxidant and anti-inflammatory properties. Amongst the isolated compounds quercetin 3-O-glucoside gave strong antioxidant activity and adonifiline strongly inhibited 5-lipoxygenase activity.

MeSH terms

  • Anti-Inflammatory Agents / chemistry*
  • Antioxidants / chemistry*
  • Asteraceae / chemistry*
  • Biphenyl Compounds
  • Ferrous Compounds
  • Flavonoids / chemistry
  • Flavonoids / isolation & purification
  • Lactones / chemistry
  • Lactones / isolation & purification
  • Lipoxygenase Inhibitors / chemistry*
  • Picrates
  • Plant Components, Aerial / chemistry
  • Plant Extracts / chemistry*
  • Plants, Medicinal / chemistry
  • Pyrrolizidine Alkaloids / chemistry
  • Pyrrolizidine Alkaloids / isolation & purification
  • Quercetin / analogs & derivatives
  • Quercetin / chemistry
  • Quercetin / isolation & purification
  • beta Carotene

Substances

  • Anti-Inflammatory Agents
  • Antioxidants
  • Biphenyl Compounds
  • Ferrous Compounds
  • Flavonoids
  • Lactones
  • Lipoxygenase Inhibitors
  • Picrates
  • Plant Extracts
  • Pyrrolizidine Alkaloids
  • adonifoline
  • beta Carotene
  • isoquercitrin
  • ferrous sulfate
  • Quercetin
  • 1,1-diphenyl-2-picrylhydrazyl