According to the regulations of the Food Sanitation Law of China (1995), Food additive means any synthetic compound or natural substance put into food to improve its quality, colour, fragrance or taste, or for the sake of preservation or processing.

At present, there are 23 categories of food additives in China, more than 2,000 varieties, including acidity regulators, anti-caking agents, anti-foaming agents, antioxidants, bleaching agents, leavening agents, coloring agents, color-protecting agents, enzymes, flavours, Nutritional enhancers, preservatives, sweeteners, thickeners, spices, etc.

Feed additive refers to a little amount or a small amount of substance added during the production, processing and use of feed. The amount used in the feed is small but the effect is significant. Feed additives are inevitable raw materials used in the modern feed industry. They have obvious effects on strengthening the nutritional value of basic feeds, improving animal production performance, ensuring animal health, saving feed costs, and improving animal product quality.