Amaranth is a promising raw material for enriching foods with protein, minerals, vitamins, dietary fibre, squalene, and other nutrients. However, its varieties differ significantly in composition and properties. The research included two stages. At first, we studied the composition of eight amaranth varieties grown in a collection nursery of Voronezh State Agrarian University. Their composition was a factor that determined their functional use as an enriching ingredient. We found that amaranth grain of the Universal variety could be best used to increase the biological value of foods, whereas the Universal and Valentina varieties could be recommended as multifunctional ingredients. The addition of enriching ingredients into foods, including breads, often leads to changes in their traditional consumer properties. Therefore, our next step was to study changes in the composition of Universal amaranth during extrusion using IR spectroscopy. Also, we assessed the effect of amaranth extrudate on the baking properties of model wheat flour and extrudate mixtures as the main factor of the product’s consumer properties. The results showed a redistribution of moisture between flour gluten proteins and extrudate dietary fibre. We also established amounts of amaranth extrudate needed to ensure the preservation of crumb appearance and structure close to the traditional ones.

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Diet correction according to the nutrition enrichment with physiologically valuable nutrients becomes one of the most important issues. Its solution is possible by inclusion in the formulation of food products of raw materials that are characterized by an increased content of deficient substances, primarily protein, dietary fiber, minerals and vitamins. The amaranth meets the criteria above. The use of amaranth processing products in food technologies makes possible to obtain specialized and functional products. In this case, better to conduct experimental confirmation of the expected effect. Studies have been conducted to evaluate the effect of grain and extrudate of whole grain of Universal Amaranth on laboratory animals. Mature male rat's stomach, liver, and kidneys served as a study material. The results of histological studies showed an improvement in the digestive system of animals and their general condition when grain and extrude Universal Amaranth was included in the diet.