title: Antioxidant activity of twenty five plants from Colombian biodiversity.
abstract: The antioxidant activity of the crude n-hexane, dichloromethane, and methanol extracts from 25 species belonging to the Asteraceae, Euphorbiaceae, Rubiaceae, and Solanaceae families collected at natural reserves from the Eje Cafetero Ecorregión Colombia, were evaluated by using the spectrophotometric 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical-scavenging method. The strongest antioxidant activities were showed by the methanol and dichloromethane extracts from the Euphorbiaceae, Alchornea coelophylla (IC50 41.14 mg/l) and Acalypha platyphilla (IC50 111.99 mg/l), respectively. These two species had stronger DPPH radical scavenging activities than hydroquinone (IC50 151.19 mg/l), the positive control. The potential use of Colombian flora for their antioxidant activities is discussed.
authors: Grupo de Biotecnología-Productos Naturales, Escuela de Tecnología Química, Universidad Tecnológica de Pereira, Pereira, Colombia. omosquer@utp.edu.co
authors: Oscar M
authors: OM
authors: Mosquera
authors: Yaned M
authors: YM
authors: Correa
authors: Diana C
authors: DC
authors: Buitrago
authors: Jaime
authors: J
authors: Niño
mesh_terms: D000975:Antioxidants / Q000302:isolation & purification* / Q000494:pharmacology*; D019659:Asteraceae; D003105:Colombia; D019665:Euphorbiaceae; D010084:Oxidation-Reduction / Q000187:drug effects; D010936:Plant Extracts / Q000494:pharmacology; D010946:Plants, Medicinal; D019666:Rubiaceae; D019657:Solanaceae
chemical_list: D000975:Antioxidants; D010936:Plant Extracts