In-vitro antioxidant studies were carried out by standard methods on leaves, stem and stem bark extracts of Ziziphus xylopyrus (Retz) Willd. belonging to family Rhamnaceae. It is an important and well known plant in the Indian system of medicine. Leaf, stem and stem bark samples of Ziziphus xylopyrus were subjected to maceration by using distilled water and ethanol. Aqueous and ethanolic extract were prepared from the leaf, stem and stem bark of Ziziphus xylopyrus. Ethanolic extract of leaves, stem and stem bark showed the potent antioxidant activity.
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