Investigation of Bolivian plant extracts for their radical scavenging activity and antioxidant activity.
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.
Parejo
Irene
I
Departament de Productes Naturals, Biologia Vegetal i Edafologia, Facultat de Farmàcia, Universitat de Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain.
Viladomat
Francesc
F
Bastida
Jaume
J
Rosas-Romero
Alfredo
A
Saavedra
Gloria
G
Murcia
M Antonia
MA
Jiménez
Antonia M
AM
Codina
Carles
C
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
D000975:Antioxidants; D016166:Free Radical Scavengers; D010936:Plant Extracts; D002083:Butylated Hydroxyanisole; D019800:Phenol; D008165:Luminol; D011794:Quercetin