Evaluation of in-vitro antioxidant activity of some medicinal herbal plants leaves extracts

Abstract

Free radicals are atoms or molecules or ions that have unpaired valence electron, usually unstable and highly reactive Over expression of free radicals exposes the tissues to conditions of oxidative stress. Oxidative stress is believed to be a primary factor in various chronic and degenerative diseases such ascancer, atherosclerosis, gastric ulcers, diabetes, Alzheimer’s disease, Parkinson’s disease, aging and other conditions.The Persea americana, Phoenix dactylifera, Syzygium cumini and Vitis vinifera leaves selected in this study are inedible, generally discarded as waste and underutilized resource in food industry had shown significant antioxidant activity.