Food additives are compounds or natural substances added to food to improve the quality of food such as color, aroma and taste, and to meet the needs of preservation and processing technology. At present, there are more than 2,000 kinds of food additives in China, including acidity regulators, anti-caking agents, defoamers, antioxidants, bleaching agents, bulking agents, colorants, color protectors, enzymes, flavoring agents, nutritional fortifiers, preservatives, sweeteners, thickeners, spices and so on.
Food additives have three characteristics: firstly, they are added to food, so they are not eaten as food alone; secondly, they include synthetic substances as well as natural substances; thirdly, they are added to food in order to improve food quality and color, aroma, taste, preservation and preservation. Processing technology needs! Its main categories are antioxidants, bleaching agents, colorants, color preservatives, enzymes, flavor enhancers, preservatives, sweeteners and so on. Food additives have greatly promoted the development of food industry and are known as the soul of modern food industry. This is mainly because they bring many benefits to the food industry. Their main functions are as follows: preventing deterioration, improving sensory properties, improving sensory properties, maintaining nutrition, improving nutritional value, convenient supply and increasing. Variety and convenience, convenient processing, convenient food processing, other special needs.