How Proteins Are Digested

How Proteins Are Digested
How Proteins Are Digested

Video: How Proteins Are Digested

Video: Protein Digestion and Absorption 2022, October

Proteins are one of the main building materials of the human body. They are necessary for the repair of injured tissue and the formation of new muscle fibers. In the course of increasing physical labor, the body's needs for proteins increase.

How proteins are digested
How proteins are digested

The assimilation of protein by the human body

Protein is considered to be protein for muscle growth. They, as a rule, enter the body with food and are absorbed exclusively after preliminary digestion in the gastrointestinal tract. This process takes place under the influence of certain enzymes and amino acids. It is they who effectively form protein molecules, which are subsequently used to build cells.

Sources, products of complete protein are: eggs, dairy products and milk, fish, meat.

Proteins represent two main functions: they perfectly supply the body with the necessary energy (sources of useful calories) and supply certain building materials for human organs (as the synthesis of new protein molecules).

A person excellently receives the necessary proteins (proteins) for muscle growth from animal and plant foods. None of them is incorporated in the body unchanged. All absorbed proteins in the digestive tract are broken down into amino acids. After this, the structure of proteins that are necessary for the body occurs. There are 8 essential acids in the body that are capable of synthesizing. The remaining 12 come in the required amount with food.

Nitrogen balance

During synthesis, some of the proteins that are intended for muscle growth are broken down. At the same time, they emit energy, which is necessary to maintain human life. The nitrogen they contain is excreted in the urine. As a rule, a person loses 25-30 g of protein per day. Therefore, it must necessarily be contained in the daily diet.

It is important to consider not only the quantity, but also the quality of muscle growth proteins when evaluating foods. With a low content or absence of essential amino acids, protein is considered to be of little value. In this case, they must be consumed in greater quantities. For example, proteins in corn and wheat are low in lysine, and proteins in legumes are not rich in methionine. Animal proteins can be classified as complete food products.

The necessary set of essential acids contains milk casein and cheese and cottage cheese made from it.

That is why in the diet of a healthy person, the proportion of proteins of animal origin (milk, eggs, cheese, cottage cheese, poultry, fish, meat) should be at least 60-80 percent. Thus, you will provide the required optimum in the composition of amino acids.

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