The article summarizes, in a concise form, information about the importance of amino acids in the context of solving the problem of fodder protein deficiency. Amino acids, as structural components of proteins, are central to the exchange of nitrogen-containing compounds and are vital for life processes. Essential amino acids are not synthesized by the body of animals and humans, but are prepared as a part of diets. Vegetable proteins are less complete than animal proteins due to the absence of some essential amino acids. Therefore, in feeding, plant feeds are balanced by limiting amino acids, which are obtained by chemical or microbiological synthesis, or combine protein sources, taking into account their amino acid composition. Amino acids are the primary microbial metabolites that are synthesized by microorganisms in the process of life. Due to the large-scale cultivation of microorganisms in industrial conditions, amino acids, proteins, preparations for increasing the productivity of crops and animals are receive. Appropriate types of microorganisms use ammonia oxidation energy to synthesize their own organic matter. Different bacteria for the synthesis of amino acids also use nitrogen, nitrates, urea. The microbiological synthesis and accumulation of metabolites in the substrate depends on the component composition, temperature. Microbial growth is usually limited by the nutrient component. Sulfur deficiency limits the utilization of nitrogen by microorganisms. The introduction of sulfur compounds into the environment stimulates microbial synthesis in general, including sulfur-containing amino acids. As a result of incubation of the biosubstrate for 3 days at a temperature of 18 °C, the synthesis of most amino acids by microbial association was activated. Incubation with sodium sulfate (at a dose of 0.3% by weight of biosubstrate) for 3 days at 25 °C had the best stimulating effect on amino acid biosynthesis. Such a biosubstrate can be used as a source of amino acids in the form of a fertilizer or feed additive. In the XXI century anthropogenic impact causes an imbalance of the ecological situation, one of the manifestations of which is the reduction of soil fertility, which can be restored by the introduction of mineral and organic fertilizers, as well as preparations containing amino acids and stimulate seed germination, increase the yield, fertility, and fertility. Amino acids are used as additives in food production, in the treatment of diseases of different etiologies and for other purposes.
