Food additives are a kind of chemical synthesis or natural substances used to improve the quality of food, extend the food shelf life, facilitate food processing and increase the nutritional content of food.Chronic food additives is to improve the food color, smell, taste and other quality, Processing technology needs to join the food in the compound or natural substances. At present, China's food additives have 23 categories, more than 2,000 varieties, including acidity regulator, anti-caking agent, defoamer, antioxidants, bleach, bulky Agents, colorants, colorants, enzyme preparations, flavor enhancers, nutritional supplements, preservatives, sweeteners, thickeners, perfumes and the like.
