Monosodium Glutamate And Caramel Coloring

Monosodium glutamate (MSG) is the sodium salt of glutamic acid, an amino acid found naturally in many foods. It is typically produced through a fermentation process. Caramel coloring is a food colorant made by heating carbohydrates, such as sugars, which can be done with or without acids, alkalis, or salts.

MSG is added to foods as a flavor enhancer to provide an umami, or savory, taste, commonly found in savory dishes, soups, and snack foods. Caramel coloring is used to give foods and beverages a brown color, appearing in products like soft drinks, baked goods, sauces, and gravies.

The FDA considers monosodium glutamate (MSG) to be Generally Recognized As Safe (GRAS). While some individuals report symptoms like headache or sweating after consuming MSG, scientific studies have not consistently linked these symptoms to typical intake levels. JECFA has evaluated MSG and set an acceptable daily intake. Caramel coloring is permitted by the FDA. Concerns have been raised about 4-methylimidazole (4-MeI), a byproduct found in some types of caramel coloring (Class III and IV), which IARC has classified as possibly carcinogenic to humans (Group 2B) based on high-dose animal studies. JECFA and EFSA have evaluated different classes of caramel colors and set acceptable daily intakes.