Because a PROTEIN is COMPLETE must contain all its specific AMINO ACIDS, the amino acids can be tied from each other nearly to the infinite, until creating more than 50 mila various proteins and 20 mila enzymes known. Every detailed list protein is composed from a determined amino acid everyone with a its specific task and he is not interchanging.
The Amino acids contain at least 16% of nitrogen, and this condition differentiates them from Carbohydrates and the Fat people.
The central nervous system them cannot work without the amino acids that act from neurotransmitters or premonitory of the neurotransmitters, if the amino acids are not all the present transmission of the messages will turn out altered. The LIVER produces l'80% of the necessary amino acids approximately, remaining 20% must be gained from external sources.
These amino acids arranging itself form proteins and take part in the more important biological processes, like the synthesis of the neurotransmitters, stimulate the immune system, are one valid prevention against the cancer.
Whichever function of our body is come true alone in presence of produced chemical energy through the Metabolism. From the external atmosphere, through the air, the water and the food, we gain our raw materials for being able living, and from the food we gain: the Carbohydrates (polisaccaridi) the Fat people, (lipids), the Proteins, that we give back under shape of refuse to the atmosphere under ammonia shape, water, carbon dioxide.
The Areas of absorption of the alimony are had in the parts of the tenuous intestine;

Glucose: last part of the duodenum,

Proteins: first part of the fast, last part of the duodenum,

Amino acids: 10% in the stomach, last part of the fast, first part of the ileus, 28% in the colon (for a total of 62%),

Fat people: last part of the duodenum, first part of the fast,

Iron: in the duodenum, Soccer in the duodenum, Saccarosio in the inferior fast, ileus.

Lactose fast, first feature of the ileus, Maltose fast, first feature of the ileus,

Vitamin D drawn first fast of the ileus, B12 Vitamin, ileus
The absorption of the amino acids is come true for l'11% to gastric level, for 60% to duodenal level, 28% to level of the colon, such absorption is express in the duodenum and the fast (drawn of the tenuous intestine) and happens slowly in the ileus.
All the proteins that we ingest come absorbed under shape of amino acids.
If due to malnutrizione are pathologies of metabolic type and to regimes it cants from the point amino acid to you, it is necessary to somministrare prepares to you that they have a WIDE PHANTOM OF AMINO ACIDS.
In GASTROINTESTINAL PATHOLOGIES, where the absorption functionality is altered or where the mucosa has endured a damage, absorptions of the amino acids will have been diminished (to possibly utlizzare supplements d Amino acids under shape of caps)
The amino acids are structural compounds of the proteins, which have an important role for the skin, the muscles, the blood, the inner organs, the hats, the nails, the proteins are determining, for the increase and the sexual development.

the amino acids are therefore the mattoni constituent of proteins. A sure number is not sintetizzabile from the organism and goes therefore assumed with the diet (these amino acids comes defined essential and assumes acronym BCAA). All the essential amino acids are present in the meat but variously present in legumi the buckets (peas, ceci, fagioli, lenticchie). Therefore, a diet pure vegetarian previews one tests association of legumi buckets in order to assume all the essential amino acids. 
Some amino acids have ramificata chain.

A supplementazione of amino acids comes associated to the anabolizzanti steroid assumption in order to favor the synthesis of muscular mass. On the other hand there is also the hypothesis that one greater assumption of amino acids stimuli one greater production of testosterone and GH. In reality, as a result of supplementazione of amino acids, has not observed some increase of GH, neither of aerobica power, neither of performance in race test. Analogous, no improvement has been found in the pesisti (integration with 20 amino acids). 
A sure interest is provoked from the alanina; this amino acid is important because alanina-glucose enters in the cycle: practically, when glucose in the course lacks the muscular job, the muscle produces the alanina and it puts it in circle; this catches up the liver that, beginning from alanina, produces glucose that, immesso in circle, is made available for muscles. Therefore proteica destruction in the extended exercise of resistance is had. However the every day protein requirementses are of 0.8-1g for kg of corporea mass and become of 1.2 g/kg in the given over subjects to resistance sport. The requirementses are same in given over athletes to force disciplines and the power (raising weigh).

Amino acids to ramificata chain (BCAA): (l-Leucina, L-Isoleucina, L-alanina) Are between the more effective nourishing, have a remarkable one to be able anabolic-anticatabolico and energetic. They are indispensable for the construction of proteins in how much without of they could not be created the chains proteinche. E' for this reason that they come calls you essential, poichè is necessary to the muscular development “the not essential” others aminocidi instead, serves in order to construct proteins, but they can be replaced from other amino acids for the frmazione of proteins and the woven ones of our body.

Betaidrossibetametibutirato (HMB): E' metabolita of the Leucina, to which they come attributed advanced property anticataboliche to the Leucina, from which drift. At the moment in Europe the sale of this product is prohibited.

Metionina: E' essential a sulphured amino acid. It helps to detossificare the fat people in the liver, participates to the formation of carnitina, nucleici trimetilglicina, colina, creatina, adrenalin, ergosterolo and acids.

Acetil L-Carnitina: it is a shape of more active carnitina. It has anticataboliche and anabolic property.

N-Acetil Cisteina: it has property anti-oxidants and anticataboliche.

Trimetilglicina (TMG) or Betaine: the DNA of the cellular nucleus loses metilici groups like result of the normal cellular aging. Ciascuna Betaine molecule donates three metilici groups to the DNA and that helps the river-metilazione process helps to ringiovanire the cells. The betaine reduces the levels of omocisteina in the blood, a molecule that can cause arteriosclerosis, thrombosis, and other damages to the organism.