HUMAN NUTRITION

Detailed explanation-1: -Essential amino acids cannot be made by the body. As a result, they must come from food. The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

Detailed explanation-2: -For each gram of protein you eat, you should get 18 milligrams of histidine, 25 of isoleucine, methionine and cysteine, 55 of leucine, 51 of lysine, 47 of phenylalanine and tyrosine, 27 of threonine, 7 of tryptophan and 32 of valine, according to the Institute of Medicine.

Detailed explanation-3: -Your body can’t produce the nine essential amino acids, so you need to get them from your diet. Conditionally essential amino acids are nonessential amino acids that become essential in certain circumstances, such as illness or pregnancy.

Detailed explanation-4: -The mnemonic PVT TIM HaLL ("private Tim Hall") is a commonly used device to remember these amino acids as it includes the first letter of all the essential amino acids. In terms of nutrition, the nine essential amino acids are obtainable by a single complete protein.