Introduction. Diet therapy is one of the main approaches to the treatment of various diseases of the digestive system. A strict lifetime diet is the main method of treatment for gluten intolerance. However, young patients, who are particularly sensitive to dietary restrictions, often fail to follow the diet due to the limited menu of recommended foods and dishes. The diet for children with gluten intolerance should include a sufficient amount of gluten-free grain-based products. They provide children with carbohydrates, dietary fibers, vegetable proteins, fats, B vitamins, and minerals, e.g. potassium, magnesium, selenium, etc. In this regard, it is urgent to develop new types of specialized gluten-free products to expand the diet both in terms of nutritional value and taste diversity. Study objects and methods. The research is part of a project on the development of dry gluten-free mixes based on buckwheat and amaranth with fruit, vegetable, and berry raw materials. The new formulations are intended for children older than three years of age with gluten intolerance. The research objective was to study the main nutrients in amaranth and buckwheat flours. The study involved the method of infrared spectroscopy using a SpectraStar 2500 analyzer. The data obtained made it possible to calculate the nutritional and energy value of products based on amaranth and buckwheat flours, as well as fruit, vegetable, and berry powders intended for children older than three years of age with gluten intolerance. Results and discussion. Amaranth flour proved to be rich in protein (13.4%), lipids (5.1%), and ash (2.8%). Native buckwheat flour contained 7.5% of protein, 3.6% of lipids, and 1.4% of ash. The carbohydrate content appeared approximately the same in both samples (56–58%). The dry gluten-free mixes can serve as an important source of vegetable protein (up to 9.44 g per 100 g of the finished product), carbohydrates (up to 40.08 g per 100 g of the finished product, and energy (from 158.12 to 221.85 kcal per 100 g of the finished product). Conclusion. The high nutritional and biological value of amaranth and buckwheat flours, as well as fruit, vegetable, and berry powders, confirmed the prospect of using them as the main components for functional foods. Amaranth and buckwheat contain no gluten but are rich in protein, amino acids, saturated and unsaturated fatty acids, minerals, and biologically active elements, which makes them an important source of nutrition for children with gluten intolerance.

Introduction. For patients with gluten intolerance, diet therapy is the main method of treatment. However, gluten-free diets are found lacking in many important components. Children that fail to consume neccessary nutrients or have problems with their absorption tend to be physically retarded. Gluten-free diet may increase the risk of autoimmune diseases, especially type I diabetes. Therefore, products for children with celiac diseases should be both gluten-free and have adequate bioavailability of carbohydrates. This article features the chemical composition of amaranth, the geometric structure of starch grains, and its effect on the formation of colloidal solutions. It also compares the glycemic index (GI) of amaranth with other gluten-free grains, i.e. rice, buckwheat, and corn. Study objects and methods. The research featured native amaranth grain (Amaranthus cruentus) (Mexico), puffed amaranth kernels (Mexico), and coarse granular amaranth flour (Mexico). Results and discussion. Amaranth grain contains 12.5–23% of protein, 50.7–77.0% of carbohydrates, 6.0–8.0% of lipids, 10.5–18.3% of dietary fiber, and 2.5–3.5% of minerals. The GI of amaranth and its products were compared with similar values of other glutenfree crops, namely rice, buckwheat, and corn. Amaranth grain and its products demonstrated a higher GI, if compared with other gluten-free grain raw materials. The GI of amaranth grain was 87, the GI of the puffed amaranth kernels was 101, and the GI of the coarse granular amaranth flour was 97. Amaranth starch is easy to digest, which is mainly due to the high content of amylopectin (88 to 98%), since amylopectin breaks down faster than amylose. The relatively small size of starch granules (1.5–3.0 microns) increases the attack capacity of enzymes. These properties make amaranth starch glycemic, or low-resistant, which means that amaranth is easily digested and possesses stability to retrogradation. Conclusion. The unique nutritional and functional properties of amaranth gluten-free products can significantly improve the diet of children with gluten intolerance. However, amaranth starch and its products have a high GI. Hence, it is necessary to control the percentage of these components in formulations and be careful with the selection of additional components and their impact on the total GI.

The effectiveness of treating gluten intolerance directly depends on the patient adherence to a gluten-free diet, which they often violate due to the limited range of recommended foods and dishes. First of all, this applies to children. The development of new types of gluten-free products using non-traditional grain raw materials has become particularly relevant, giving the possibility to expand the diet both in terms of nutritional value and taste diversity. Mainly due to the intake decrease of grain-based products, children are lack of such important minerals as potassium, magnesium, selenium, etc. The mineral elements contained in cereals are important for the growing child body, since they are involved in many important biochemical processes. The article purpose is to determine the minerals (Ca, Mg, K, Na, P, Fe, Cu, Zn, Mn, Se, Co, Pb, Ni, Mo, Cd, As, Hg) content in buckwheat and amaranth flour, as well as in products obtained from flour mixtures of these cultures. According to the obtained data on the macro-and microelements content in gluten-free products, a significant part of the minerals in the considered flour samples is potassium: 371 mg/100 g – for amaranth flour and 405 mg/100 g – for buckwheat flour. High magnesium content was in buckwheat (239.9 mg/100 g) and amaranth (202.5 mg/100 g) flour. There was a low calcium content in both samples: 69.0 mg/kg in amaranth and 62.0 mg/kg in buckwheat flour. Amaranth flour is superior to buckwheat in the content of trace elements such as copper (319 mcg/100 g), zinc (2495 mcg/100 g) and selenium (515.4 mcg/100 g). Buckwheat flour contains more phosphorus (263.3 mg/100 g), potassium (405.9 mg/100 g), magnesium (239.9 mg/100 g), and copper (334 mcg/100 g) than amaranth flour. According to the results obtained, amaranth and buckwheat flour can be classified as good sources of selenium – 515.4 and 404.0 mcg/100 g, respectively. The mineral substances content in pancakes made from mixtures of amaranth flour and native buckwheat flour decreased within 3.0–23.0 % of their content in the original flour. The calculation of the recommended daily requirement showed that consuming pancakes portion (45 g) by school-age children meet their daily need, %, on average: in magnesium – by 35.3; in potassium – by 9.5; in iron – by 26.4; in copper – by 19.6; in selenium – by 27.7.

Diet therapy is one of the main approaches to the treatment of a wide range of diseases of the digestive system. The treatment effectiveness of celiac disease depends on how strictly the patient adheres to a gluten-free diet. It is often disrupted due to the limited range of recommended foods and dishes, especially for children who are particularly sensitive to dietary restrictions. In this case, the development of new types of specialized gluten-free products is relevant, allowing to expand the diet both in terms of nutritional value and taste diversity. This study concerns the recipe developments of dry gluten-free mixtures using rice and amaranth with the inclusion of fruit and vegetable and berry raw materials intended for the nutrition of children over three years old suffering from celiac disease. When developing the recipes, researchers used various combinations of rice and amaranth flour, as well as fruit and vegetable powders. The rice flour composition varied in the range from 15 to 75%; amaranth – from 15 to 45%; fruit and vegetable and berry powders – up to 10%. The finished product was gluten-free cookies, muffins, pancakes made of rice and amaranth. Organoleptic evaluation showed that the studied samples of gluten-free cookies have high quality characteristics, have a pleasant taste and aroma. According to the calculated data, specialized gluten-free dry mixtures intended for children over three years with celiac disease can serve as an important source of: vegetable carbohydrates – from 26.81 to 55.19 g / 100g of finished products; protein – from 4.06 to 11.82 g/100g of finished products; dietary fiber – from 3.82 to 6.36 g/100g of finished products; and energy – from 158.12 to 333.96 kcal/100g of finished products) The developed recipess of gluten-free products can help to provide children with an adequate amount of nutrients and energy.

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