OPTIMIZATION OF MIXTURES WITH A BALANCED CHEMICAL COMPOSITION AND POSSIBILITIES FOR THEIR EXTRUSION

Abstract

A combination of different raw materials (beans, einkorn wheat and buckwheat) were studied to obtain compositions with high protein and balanced amino acid composition using the simplex lattice plans. The target function for optimization performed: a protein content of sulfur-containing amino acids methionine and cysteine, lysine and tryptophan. In the course of solving the optimal area of raw material combinations has been received in food formulas with a balanced biochemical composition. Optimized ternary mixture consisting of 50% bean odnozernovoy 40% wheat and 10% buckwheat with different moisture contents (16,22 and 28%) was extruded in a single screw extruder. extrusion parameters were as follows: screw rotation speed of 50 rpm, die diameter 3 mm, screw compression ratio 2: 1, temperature 100/140/160 ° C, screw speed 160 rpm. These three extrudate with different initial moisture content was evaluated by the index extension index of water absorption, index of solubility in water and density, in order to select the best option. The results showed that with an initial moisture content of 22% turned extrudate with good physical and chemical characteristics as a whole, but it is necessary to spend a few studies on the optimization further to confirm this.