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Amino Acid Efficacy and Function
The role of amino acids
1. The digestion and absorption of protein in the body is accomplished through amino acids: As the first nutrient element in the body, its role in food nutrition is obvious, but it cannot be directly used in the human body. It is used after becoming a small amino acid molecule.
2. Nitrogen balance: When the quality and quantity of protein in the daily diet are appropriate, the amount of nitrogen ingested by feces, urine, and skin is equal, which is called the total balance of nitrogen. It is actually a balance between the constant synthesis and decomposition between proteins and amino acids. Normal daily intake of protein should be kept within a certain range, suddenly increase or decrease the amount of intake, the body can still regulate the amount of protein metabolism to maintain nitrogen balance. Ingestion of excessive protein, beyond the body's ability to adjust, the balance mechanism will be destroyed. If you do not eat protein at all, the body tissue protein will still be decomposed and the negative nitrogen balance will continue to appear. If you do not take timely measures to correct it, you will eventually lead to the death of the antibody.
3. Conversion to sugars or fats: The a-keto acids produced by the catabolism of amino acids are metabolized by the metabolic pathways of sugar or lipid with different characteristics. A-keto acid can be re-synthesized into new amino acids, or converted into sugars or fats, or oxidized and decomposed into tri-carboxylic acid to CO2 and H2O and released energy.
4, involved in the composition of enzymes, hormones, some vitamins: The chemical nature of the enzyme is the protein (amino acid molecular composition), such as amylase, pepsin, cholinesterase, carbonic anhydrase, transaminase and so on. Nitrogen-containing hormones are proteins or their derivatives, such as growth hormones, thyroid-stimulating hormones, epinephrine, insulin, and hormones that promote intestinal fluids. Some vitamins are converted by amino acids or bind to proteins. Enzymes, hormones and vitamins play an important role in regulating physiological functions and catalyzing metabolic processes.
5, the human body needs the amount of essential amino acids: The amount of essential amino acids for adults is about 20% of protein requirements, - 37%.
The effect of amino acids
In the elderly, synthesis is slowed if there is a lack of protein breakdown in the body. Therefore, in general, older people need more protein than young adults, and the demand for methionine and lysine is also higher than young adults. Elderly people over the age of 60 should consume about 70 grams of protein per day, and require that the protein contains a complete range of essential amino acids and an appropriate ratio, so that high-quality protein will prolong life.
2. Amino acids are mainly used in medicine to prepare compound amino acid infusions, as well as therapeutic drugs and synthetic peptide drugs. There are a hundred kinds of amino acids that are currently used as drugs, among which there are 20 kinds of amino acids constituting proteins and 100 kinds of non-protein amino acids.
Compound preparations composed of various amino acids play a very important role in modern intravenous nutrition infusion and "elemental diet" therapy. They play an active role in maintaining the nutrition of critical patients and saving the lives of patients. They have become an indispensable medicine variety in modern medicine. one.
Amino acids such as glutamic acid, arginine, aspartic acid, cystine, and L-dopa act alone to treat some diseases. They are mainly used for the treatment of liver diseases, digestive diseases, encephalopathy, cardiovascular diseases, respiratory diseases, and To improve muscle activity, pediatric nutrition and detoxification. In addition, amino acid derivatives have shown promise in the treatment of cancer.
In order to survive, humans must ingest food in order to maintain normal physiological, biochemical, and immunological functions, as well as growth, metabolism, and other life activities of antibodies. Foods are digested, absorbed, metabolized in the body, and promote the growth and development of antibodies, fitness, and anti-aging. The comprehensive process of disease prevention and longevity is called nutrition. The active ingredients in food are called nutrients.
Proteins, lipids, carbohydrates, inorganic salts (ie, minerals, containing macroelements and trace elements), vitamins, water, and dietary fibers, which constitute the most basic substances in the human body, are also nutrients that the human body needs. They have their own unique nutritional functions in the body, but they are closely linked in metabolic processes to participate in, promote and regulate life activities. The body communicates with the outside world through food, keeping the internal environment relatively constant, and completes the unification and balance of internal and external environments.
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