1, preservative. Preservatives refer to natural or synthetic chemical components used to add food, medicines, pigments, biological specimens, etc. Delaying the growth of microorganisms or corruption caused by chemical changes. Its main function is to inhibit the reproduction and growth of microorganisms, thus prolonging the storage time of food and inhibiting the decay of substances.

2. Antioxidants. Antioxidants are widely used food additives, which can prevent or delay food oxidation, improve food stability and prolong shelf life.

3. Sweetener. Sweetener is another important food additive, which is widely used in sweets and drinks.

4, flavors and fragrances. Edible flavor refers to the flavor of natural food, and it is a variety of flavors with natural flavor that are carefully blended by natural and natural equal spices and synthetic spices.

5. pigments. Food pigment is a kind of food additive that people can eat in moderation and can change the original color of food to a certain extent. Like food flavors, food pigments can also be divided into natural and artificial synthesis.