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The free radicals and reactive oxygen species, such as superoxide radical (O2·-), hydroxyl radicals (OH·), and peroxyl radicals (ROO·), are thought to be harmful to human health and trigger many diseases, such as cancer, coronary heart diseases, arteriosclerosis, inflammatory disorders, and aging.Antioxidants are considered to be possible defensive agents for oxidative damage of human body.Therefore, there is a great interest in the antioxidants for supply to human as food components or as specific pharmaceutics.