An essential amino acid, or indispensable amino acid, is an amino acid that cannot be synthesized by the organism, and must be supplied in diet.
The 9 amino acids humans cannot synthesize (F V T W M L I K H):
Animal and plant proteins are made up of about 20 common amino acids.
Synthesis of 6 other amino acids - conditionally essential - can be limited under special conditions (R C G Q P Y): arginine, cysteine, glycine, glutamine, proline, and tyrosine.
Dispensable amino acids can be synthesized in the human body, 5 (A D N E S): alanine, aspartic acid, asparagine, glutamic acid and serine .
© Lena Nechet
Parent Category: Data
Minerals (nutrients) are inorganic substances (contain no carbon) that are necessary for normal body function and development.
Macro-minerals are needed in large doses (approximate recommended daily intake, milligrams (mg) per day ):
- potassium, K (3500 mg) - metal, ions are necessary for the function of all living cells;
- chloride, Cl− (3400 mg) - essential electrolyte in all body fluids;
- sodium, Na, natrium (2400 mg) - metal, essential for all animals and some plants;
- calcium, Ca (1000 mg) - metal, essential for living organisms, produced in supernova nucleosynthesis;
- phosphorus, P (1000 mg) - in the form of the phosphate is required for all known forms of life;
- choline (425 - 550 mg) - essential vitamin-like (vitamin B4) nutrient, synthesized in human body, but not sufficiently;
- magnesium, Mg (350 mg) - metal, essential for all known living organisms;
Trace minerals are needed in very small amounts (recommended daily intake, milligrams (mg) or micrograms (mcg) per day:
- iron, Fe (15 mg) - metal, found in nearly all living organisms;
- zinc, Zn (8 - 11 mg) - metal, essential for humans and other organisms;
- manganese, Mn (5 mg) - metal, toxic essential trace element;
- fluorine, F, fluoride ion, F− (3 - 4 mg) - a beneficial poisonous element, essential for bone solidity;
- copper, Cu (2 mg) - metal, essential to all living organisms;
- iodine, I (150 mcg) - a key component of thyroid hormones;
- selenium, Se (35 mcg) - toxic in large doses, essential micronutrient for animals;
- chromium, Cr (30 mcg) - chromium (III) is questionably essential for humans.