Abstract
The chemical structure of grain of four varieties of soft wheat of Kazakhstan selection is considered: Shortandinskaya, Novosibirskaya-31, Trizo and Tobolskaya. The content of proteins, carbohydrates, fats, ash, as well as macroelements: potassium, phosphorus and magnesium is determined. It is established that the Novosibirskaya-31 variety is characterized by the highest content of protein and minerals. It is revealed that the Trizo variety is characterized by minimal ash content, which increases its technological value for the flour-milling industry. Statistical processing of the results is carried out by the method of variance analysis, as well as the principal component analysis (PCA). The main parameters influencing the nutritional value of the varieties are determined. Recommendations for theuse of the studied varieties in the production of healthy and dietary food products are formulated