The Green Tea Extract has many functional phytonutrients, such as polyphenols, catechin, EGCG, etc. Tea polyphenols have strong antioxidant effects, their antioxidant capacity is 4-6 times that of synthetic antioxidants BHT and BHA, 6-7 times that of VE, 5-10 times that of VC, and the dosage is less: 0.01 -0.03% can work without the potential toxic and side effects of the compound; catechin has a protective effect on the pigments and vitamins in the food, so that the food can maintain the original color and nutritional level for a long time, which can effectively prevent the Corruption of food and edible oils, and can eliminate odors.