Abstract:Flavonoids are a group of more than 6000 polyphenolic compounds that occur naturally in foods of plant origin. These compounds possess a common phenylbenzopyrone structure (C6-C3-C6), and they are categorized according to the saturation level and opening of the central pyranring, into flavonesflavanols, isoflavones, flavonols, flavanones, and flavanonols. It’s a phytosynthesis secondary metabolite, existing in vegetables, tea and many other food-borne plants in the form of its bond (flavonoids glycoside) or free state (flavonoids million). In recent years, the discovery flavonoids with human health and disease treatment of functional are to be universal. Flavonoids might soften the blood vessel, had the anticancer, antioxidant activities and eliminated free radical.Flavonoids are the natural polyphenol antioxidants in drink, vegetables, fruit, tea and grape wine.
In this paper, morin, naringenin and chrysin are researched antioxidant activity, using the reducing power, superoxide anion radical and hydroxyl radical models.