They are often used in the same way that monosodium glutamate (MSG) is used and, like MSG, often contain free glutamic acid.
en.wikipedia.org Its taste is rich in umami due to its high content of various free amino acids, such as glycine, alanine, and glutamic acid.
en.wikipedia.org Synthetic analogs of glutamic acid that can be activated by ultraviolet light and two-photon excitation microscopy have also been described.
en.wikipedia.org Some protein-rich plant foods also serve as sources. 30% to 35% of the protein in wheat is glutamic acid.
en.wikipedia.org During his research on molasses he discovered several compounds in molasses, for example betaine, asparaginic acid, glutamic acid, arabinose, arabinic acid, dextran, phosphoglyceride and cholesterol.
en.wikipedia.org