Green Tea is one of the most ancient and popular therapeutic beverages consumed around the world. This product is made from the leaf of the plant called “Camellia sinensis”. It can be prepared as a drink, which can have many systemic health effects or an “extract” can be made from the leaves to use as medicine. This beneficial effect has been attributed to the presence of high amounts of polyphenols, which are potent antioxidants. In particular, green tea may lower blood pressure and thus reduce the risk of stroke and coronary heart disease. The aim of recent study was achieved to compare the antioxidant properties and phenolic contents. In this view the antioxidant efficacy of green tea extract and the effectiveness compared to the standard antioxidant, ascorbic acid based on many methods have been demonstrated.
