Used as additive in food field, CMC has the functions of thickening, suspending, emulsifying, stabilizing, shaping, filming, bulking, anti-corrosion, retaining freshness, acid-resisting, health protecting, etc. It can replace the application of guar gum, gelatin, agar, sodium alginate, and pectin. It is widely used in modern food industry, such as frozen food, solid drink, fruit juice, jam, lactic acid drinks, condiment, biscuit, instant noodles, bakery products, meat products, etc.