MSG is a sodium salt of amino acid that enhances a flavour of certain foods. It does not enhance the four basic taste (bitter, salty, sour, sweet) but it does enhance the complex flavours of meat, poultry, seafood and vegetables. It is naturally present at high levels in tomatoes and Parmesan cheese.
Molecular Formula of Citric Acid Monohydrate:
Monosodium Glutamate E621 is widely used as flavour enhancer in food such as in sausage, canned vegetables, soups and processed meats, Potato chips, frozen dinners, cold cuts, gravies, ranch dressing, salty flavoured snacks.
Monosodium Glutamate E621 is used as flavour enhancer in beverage such as in soy sauce and cheese to improve flavour.