studied nutritional composition (protein contents and amino acid spectra, amino acid content, fatty acid composition, mineral content) of mealworms Tenebrio molitor (larvae), crickets Gryllodes sigillatus (adult), locusts Schistocerca gregaria (adult). Research shown that G. sigillatus, S. gregaria, and T. molitor contain 130, 70, and 40 mg calcium per 100 g dry weight, respectively while beef has on average 4–27mg, pork – 5–28, and poultry only 5–14 mg/100g