Monosodium glutamate E621 mesh 60-120 China. Food flavor enhancer E621 Monosodium glutamate (glutamate) is a fairly popular food additive that can correct the taste and aroma of the final product in a positive direction. Even products with a "spoiled" reputation acquire the characteristics of a fresh one. Monosodium glutamate is often used as a substitute for salt. Externally, the food additive E621 is a crystalline powder in structure, white in color, or crystals. Her smell is barely perceptible, and the taste is characteristic of meat. Get it through microbiological synthesis.