There are 23 kinds of amino acid , fifteen of them can be produced by our body system. The other the other eight aminos are often considered as the essential amino acid, it have to come from our diet.
there are some vegetation foods below which are containt 8 the essential amino acid
• Brussel cabbage
• Kacang Polong
• sun flower seeds
Protein is produced by body after processing amino acid ( from various source : ivans)