Monosodium glutamate is a food additive, monosodium glutamate (C5H8NNaO4), chemically known as monosodium α-aminoglutarate, is the sodium salt of glutamic acid, commonly used in life as the main ingredient of the seasoning MSG is monosodium glutamate.

Monosodium glutamate has a strong meat flavor, MSG diluted with water to 3000 times can still feel the fresh taste, widely used in the family, catering, food processing industry. Sodium guanylate and monosodium glutamate used at the same time, has a synergistic effect, can improve the fresh flavor, also known as freshness aid or powerful monosodium glutamate.