Anti-oxidative activities of the various extracts of stem bark, root and leaves of Ziziphus mucronata (Rhamnaceae) in vitro

The present study was conducted to examine the anti-oxidative activities of extracts from different parts of Ziziphus mucronata. Stem bark, root and leaf samples were sequentially extracted with solvents of increasing polarity and tested for in vitro anti-oxidative activity using various models. Our results indicated that all the extracts had potent electron donating and 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging activities. However, the ethanolic extracts exhibited a significantly (p