Evaluation of antioxidant activity of medicinal plant extracts produced for commercial purpose

Abstract

The antioxidant potential of some herbal plant extracts (commercial products) was measured using various in vitro assays. Among the extracts from Curcuma longa, Caffea arabica, Tribulus terrestris, Bacopa monnieri and Trigonella foenum- graecum, the Curcuma longa and coffee bean extract (Caffea arabica) showed greater antioxidant activity measured as scavenging of DPPH, superoxide radicals, reducing power and inhibition of microsomal lipid peroxidation. © Copyright E-Journal of Chemistry 2004-2011.