Antioxidants such as polyphenols and carotenoids are substances that may protect cells against the effects of free radicals. There is an increasing interest to antioxidants in recent years due to a range of unique anti-aging properties. The Oxygen Radical Absorbance Capacity (ORAC) Assay is a reliable tool to evaluate the antioxidant capacity from foods extract. We provide a comprehensive analysis kit according to the standard of the National Agriculture and Food Research Organization, Japan.