Extracts of Phyllostachys edulis leaf having antioxidant activity and the process for preparation thereof

PURPOSE: A method of preparing a leaf extract of Phyllostachys pubescence having excellent antioxidant activity, in particular, an active oxygen scavenging function is provided. Thus obtained extract can be applied to a pharmaceutical composition for prevention and treatment of aging and adult disease and a functional food and cosmetic for prevention of aging. CONSTITUTION: Phyllostachys pubescence is washed, freeze-dried and crushed to produce powder. Next, the dried powder is extracted under reflux, in an organic solvent selected from hexane, chloroform, ethylacetate and butanol and then solvent fractionated. Additionally, the solvent fraction is purified using column chromatography and thin layer chromatography. The antioxidant composition contains the Phyllostachys pubescence extract as an effective component.