What is monosodium glutamate and where is it found?
Monosodium glutamate is the sodium salt of glutamic acid. Glutamate is a naturally occurring amino acid that is found in nearly all foods, especially high protein foods such as dairy products, meat and fish and in many vegetables. Foods often used for their flavouring properties, such as mushrooms and tomatoes, have high levels of naturally occurring glutamate. The human body also produces glutamate and it plays an essential role in normal body functioning. Monosodium glutamate added to foods produces a flavouring function similar to the glutamate that occurs naturally in foods. It acts as a flavour enhancer and adds a fifth taste, called “umami”, which is best described as a savoury, broth-like or meaty taste. In the European Union, monosodium glutamate is classified as a food additive (E621) and regulations are in place to determine how and when it can be added to foods. Typically, monosodium glutamate is added to savoury prepared and processed foods such as frozen foods, spice mixes