Food additives are a class of chemically synthesized or natural substances used to improve food quality, extend food shelf life, facilitate food processing and increase food nutrients. Food additives can prevent food spoilage, improve the sensory and physical and chemical properties of food, and meet people's different needs. Here are some common food additives and their effects.
1. Preservatives.
Preservatives are chemicals that inhibit the growth and reproduction of microorganisms and are often used to extend the shelf life of foods. Common preservatives are benzoic acid, sorbic acid, calcium propionate, etc. These substances are able to damage the cell walls of microorganisms, inhibiting their growth and reproduction, thereby extending the shelf life of food.
2. Antioxidants.
Antioxidants are chemicals that prevent or delay oxidative spoilage of food. Common antioxidants are vitamin C, vitamin E, tea polyphenols, etc. These substances can scavenge free radicals in food, prevent oxidation and deterioration of food, and maintain the nutritional value and taste of food.
3. Colorants.
Colorants are chemicals that give color to food. Common colorants are natural and synthetic. Natural pigments, such as tartrazine, sunset yellow, etc., are extracted from plants and are harmless to humansSynthetic pigments, such as tartrazine, are synthesized from chemical raw materials and are harmful to the human body. Colorants can improve the appearance of food and increase people's appetite.
Fourth, flavor enhancer.
A flavor enhancer is a chemical that adds flavor to food. Common flavor enhancers include monosodium glutamate, disodium inosinate, etc. These substances can improve the taste and flavor of food, making it more delicious.
5. Emulsifiers.
An emulsifier is a chemical substance that enables immiscible two-phase liquids, such as oil and water, to form a stable emulsion. Common emulsifiers are monoglycerides, sucrose esters, etc. These substances can improve the texture and taste of food, and improve the stability of food.
In short, food additives play an important role in the food industry, but they must comply with relevant national regulations and standards to ensure food safety and health. Food safety