Amino acid action
1, the digestion and absorption of proteins in the body is accomplished by amino acids: as the first nutrition elements of protein in the body and the role of it in food nutrition is obvious, but it cannot be used directly in the human body, but through small molecules into amino acid after being used.
2. Nitrogen balance: when the quality and quantity of protein in the daily diet is appropriate, the amount of nitrogen consumed is equal to the amount of nitrogen expelled from the manure, urine and skin, which is called the total equilibrium of nitrogen. It's actually a balance between protein and amino acids that are constantly being synthesized and decomposed. The protein should be kept within a certain range, and the body can regulate the metabolism of protein to maintain the nitrogen balance. The balance mechanism can be destroyed by overfeeding the excess protein and beyond the body's ability to regulate. Protein is not eaten at all, and the protein in the body is still broken down, and the negative nitrogen balance is continuously present. If you do not take corrective action in time, you will eventually lead to the death of the antibody.
3. Convert to sugar or fat: amino acid catabolism produces the a-ketoacid, which is metabolized by metabolic pathways of sugar or fat with different properties. A - ketoacid can be used to synthesize new amino acids, or convert to sugar or fat, or into tricarboxycyclic oxidation to decompose into CO2 and H2O, and release energy.
4, participate in enzyme, hormone, some vitamin: the chemical nature of the enzyme is protein (amino acid molecules), such as amylase, pepsin, cholinesterase, carbonic anhydrase, transaminase, etc. The components of nitrogen-containing hormones are proteins or their derivatives, such as growth hormone, thyrotropic hormone, epinephrine, insulin, and enterotropic hormone. Some vitamins are made from amino acids or combine with proteins. Enzymes, hormones and vitamins play an important role in regulating physiological functions and catalytic metabolism.
5. Requirements for essential amino acids of the human body: the required amount of essential amino acids for adults is about 20 percent of the protein requirement, 37 percent.
1. Prolong life
If the body lacks protein breakdown in the elderly, the synthesis slows down. Generally speaking, older people need more protein than young adults, and the demand for methionine and lysine is higher than in young adults. People over age 60 should consume about 70 grams of protein per day, and require that the protein contain the necessary amino acids in a complete and appropriate way, such a high quality protein, and prolong life.
2. Amino acids are mainly used in the preparation of compound amino acid infusion, as well as therapeutic drugs and synthetic peptide drugs. There are over a hundred amino acids currently used as medicine, including 20 amino acids that make up proteins and more than 100 amino acids that make up the non-protein.
By a variety of amino acid composition of compound preparations in modern vein infusion nutrition and diet "elements" occupies very important status in the therapy, nutrition, to maintain the critically ill patient rescue patients life, positive role to become one of essential medical varieties in modern medicine.
Glutamic acid, arginine and aspartic acid, cystine, L - dopa function separate treatment of some diseases such as amino acids, mainly used in the treatment of liver disease, gastrointestinal disease, brain, cardiovascular disease, respiratory disease, and used to improve muscle energy, pediatric nutrition and detoxification, etc. In addition, amino acid derivatives have shown promise in cancer treatment.
Antibody of human essential food intake in order to survive, in order to maintain the normal physiological, biochemical, immune function, and life activities such as growth, metabolism in the body after digestion, absorption, metabolism, promote the growth and development of antibodies, mental health, anti failure prevention, prolong life of the integrated process is referred to as nutrition. The active ingredient in food is called nutrient.
As constituting the human body is the most basic material of proteins, lipids, carbohydrates, inorganic salt (namely minerals, including major elements and trace elements, vitamins, water and food fiber, also is the human body needed nutrients. They have their own unique nutrition functions in the body, but they are closely related in the process of metabolism, and participate, promote and regulate life activities. The body connects with the outside world through food, maintains the relative constant of the internal environment, and completes the unity and balance of the internal and external environment.