In this case, only when sufficient quantities have been ingested are we able to synthesize the remaining non-essential amino acids. Example of essential amino acids:• Phenylalanine• Methionine• Tryptophan• Threonine• Lysine• Isoleucine• Leucine• Valine• HistidineConditionally essential amino acids: They are present in many foods, but are not always required in the daily diet. As long as we manage to absorb sufficient amounts of essential amino acids, the liver is able to synthesize the other remaining amino acids conditionally. At certain times of life and in certain population groups, these amino acids must be supplied through the diet to ensure good health. Adequate intake of conditionally essential amino acids will also help save valuable essential amino acid resources. Example of conditionally essential amino acids: • Glycine • Alanine • Tyrosine • Serine • Cysteine ​​• Proline • Glutamic acid • Glutamine • Aspartic acid•