Amino Acids in Soy Protein

 


The protein in food is made up of amino acids, and the quality of that protein is based on the number and types of amino acids it contains. Animal foods contain high-quality protein, and egg white has the highest quality protein of all. Unlike other plant or vegetable proteins, soy protein contains all of the essential amino acids necessary for good health. That makes soy protein a complete protein, similar to the protein found in animal foods.

Types

Of the 20 amino acids your body needs to build proteins required for normal growth and maintenance of health, 9 are called essential amino acids, because they cannot be made by your body and must come from your diet, according to MedlinePlus.com. The 9 essential amino acids, found in soy protein and many animal foods, are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine. Arginine is essential for children but not adults. There are also 10 nonessential amino acids, found in various foods and in different combinations with some or all of the essential amino acids. Your body can make these nonessential amino acids if they are not provided by your diet.

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