The Protein and Amino Acid Content in Seeds of Kazakhstani Soybean Varieties

The article presents results of determining the content of proteins and amino acids in seeds of Kazakhstani soybean varieties. Soybean, being a high-protein crop, contains from 30 to 50% protein. The advantage of soybean protein among other plant proteins is the optimal ratio of amino acids. These are, first of all, essential amino acids, the main source of which are animal proteins. Soy protein, when consumed at the recommended dose, most fully satisfies the daily intake of essential amino acids of an adult. It is important to identify varieties with the highest protein content and essential amino acids. In this study, protein determination was carried out by the Bradford (1976) spectrophotometric method. The amino acid content was determined by high-performance liquid chromatography. The objects of the study were domestic soybean varieties: «Lastochka», «Almaty» and «Vita» from the collection of LLP «Kazakh Research Institute of Agriculture and Plant growing», Almalybak v., Almaty region, Republic of Kazakhstan. According to the results obtained, the Lastochka variety has the highest content of protein, and also the amino acid composition of the «Lastochka» variety differs by existing of essential amino acids, which makes it possible to recommend it both for food and in the production of biologically active additives.