RESEARCH ARTICLE Antioxidant and phytoche

Full list of author information is available at the end of the articleBackground Living cells are known to generate free radicals reactive oxygen species (ROS) through physiological and bio-chemical processes in the body system [1-3]. Free radi-cals such as OH-, O2.-,.NO-, RO2- and LOO- are products of normal metabolic processes in the human body. It is true that the body can handle free radicals, but if these radical productions become excessive, it could cause cell wall and DNA damage, leading to chronic diseases like cancers and cardiovascular disease [1-3]. Dietary antioxidant from food intake, such as vitamin E, selenium and polyphenols like green tea has been reported to decrease the adverse effects of free radicals [4]. They act as scavengers by donating one of their own electrons in order to replace the stolen electron from free radicals [4]. Several standard established antioxidant drugs such a