Are MSG and hydrolyzed protein related?
Yes. MSG is the sodium salt of glutamic acid. Glutamic acid is an amino acid, one of the building blocks of protein. It is found in virtually all food and, in abundance, in food that is high in protein, including meat, poultry, cheeses, and fish. Hydrolyzed proteins, used by the food industry to enhance flavor, are simply proteins that have been chemically broken apart into amino acids. The chemical breakdown of proteins may result in the formation of free glutamate that joins with free sodium to form MSG. In this case, the presence of MSG does not need to be disclosed on labeling. Labeling is required when MSG is added as a direct ingredient.
