Mixed tocopherol is a natural vitamin E, which is a mixture of various tocopherols directly extracted and concentrated from deodorized distillates of vegetable oil. It is one of the sources of vitamin E in food and is a transparent oily liquid. tocopherols are mainly present in corn oil, soybean oil, and olive oil, and their biological activity is several times higher than synthetic vitamin E. It is widely used as an antioxidant, dietary supplement, and animal feed. Natural vitamin E contains four molecular components, namely α- Tocopherol β- Tocopherol γ- Tocopherol α- The order of biological activity of tocopherols is α- Tocopherol> β- Tocopherol> γ- Tocopherol> δ- Tocopherol. Among them, α－ The activity of tocopherol is the highest, its distribution is the widest, and it is the most representative, α- Tocopherol can be used as a high-purity natural tocopherol supplement in liquid functional foods and regular foods. It has been widely used as an antioxidant and nutrient in food, cosmetics, personal care products, and the feed industry.