title: Investigation of Bolivian plant extracts for their radical scavenging activity and antioxidant activity.
abstract: Fifty-four different extracts of nine Bolivian plants belonging to the family Asteraceae were evaluated for their radical scavenging activity by the DPPH*, NBT/hypoxanthine superoxide, and (*)OH/luminol chemiluminescence methods, and for their antioxidant activity by the beta-carotene bleaching test. The total phenolic content was also determined by the Folin-Ciocalteu method, and the oxidative stability by the Rancimat test. Both remarkably high phenolic content and radical scavenging and antioxidant activities were found mainly in the ethyl acetate fractions among the different plant extracts. Some ethyl acetate and even some defatted crude extracts exhibited activities comparable to those of commercial extracts/compounds, thus making it possible to consider some of the studied plants as a potential source of antioxidants of natural origin.
authors.affiliation: Departament de Productes Naturals, Biologia Vegetal i Edafologia, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain.
authors.forename: Irene
authors.initials: I
authors.lastname: Parejo
authors.forename: Francesc
authors.initials: F
authors.lastname: Viladomat
authors.forename: Jaume
authors.initials: J
authors.lastname: Bastida
authors.forename: Alfredo
authors.initials: A
authors.lastname: Rosas-Romero
authors.forename: Gloria
authors.initials: G
authors.lastname: Saavedra
authors.forename: M Antonia
authors.initials: MA
authors.lastname: Murcia
authors.forename: Antonia M
authors.initials: AM
authors.lastname: Jiménez
authors.forename: Carles
authors.initials: C
authors.lastname: Codina
mesh_terms: D000975:Antioxidants / Q000032:analysis*; D019659:Asteraceae / Q000737:chemistry*; D001838:Bolivia; D002083:Butylated Hydroxyanisole / Q000032:analysis; D016166:Free Radical Scavengers / Q000032:analysis*; D008163:Luminescent Measurements; D008165:Luminol; D019800:Phenol / Q000032:analysis; D010936:Plant Extracts / Q000737:chemistry*; D011794:Quercetin / Q000032:analysis
chemical_list: D000975:Antioxidants; D016166:Free Radical Scavengers; D010936:Plant Extracts; D002083:Butylated Hydroxyanisole; D019800:Phenol; D008165:Luminol; D011794:Quercetin