Cooked Onion: Complete Amino Acid Profile

Cooked Onion: Considered a good source of amino acids?

Cooked onion is not a good source of amino acids. Amino acids are the "building blocks" of proteins and are essential for basic bodily functions, such as generating hormones and creating new cells. Cooked onions provide very few nutrients compared to raw onions, including fewer vitamins, minerals, and almost no dietary protein or amino acids. While some cooked onions may contain trace amounts of tyrosine and isoleucine, these two amino acids represent only 0.03 percent of the total nitrogen in onions. To gain adequate amounts of amino acids, individuals should focus on sources with higher concentrations of these important compounds, such as fish, poultry, eggs and dairy products.