Glutamic acid is a major component of protein, found in many common foods, such as tomatoes, sugar beets, mushrooms and cheese. The human body also naturally produces it.
氨基酸是蛋白質組成的重要成分，在許多食物中如蕃茄、甜菜、香菇、乳酪中都可發現，人體也可自己製造。