EXTRUDATES FROM VEGETABLE RAW MATERIALS WITH A HIGH CONTENT OF LIPIDS
The purpose of researches is identifiing and assessing the various factors impact of the herbal extrusion process with high content of lipids for the quality of the extrudates. Experimental studies were performed using a single-screw extruder, additionally equipped with a vacuum chamber and the rotary valve. As object of research were selected seeds, milk Thistle and grain of wheat units which have extrudible within 15-20 s temperature 100-105°C with the last criterion impact on emerging from the die matrix extruder raw material reduced pressure of equal to 0,05 MPa. Speed screw extruder was 7.5 s -1, the diameter of the extruder die matrix - 4 mm. The experiment was performed in triplicate. Statistical analysis of experimental data, performed with the help of regression analysis in Microsoft Excel environment of 2010 and Statistica 10, allowed to obtain mathematical model of the second order, adequately describe the dependence of the extrudates (coefficient explosion) index expansion by the investigated factors. Analysis of the resulting model suggests that the magnitude of the extrudates (coefficient explosion) index expansion is significantly influenced by the content of Thistle seeds in the extrudable mixture to the decrease in milk Thistle in the mixture to 10-15%, it increases to 4.5 to 5.0. By increasing the moisture content of the extruded thistle coefficient explosion also increases, making its optimum value in the humidity range 16-26% of the processed raw material. In this humidity wheat in terms of the resulting extrudate optimal quality range 10-18%. Experimental studies show very important in practical terms, regularity at the same moisture content of milk thistle and wheat and, especially at the higher moisture content of wheat than the thistle, the process of extruding the mixture deteriorates. To obtain the extrudate Thistle with an acceptable coefficient of explosion (3.5-4.0) as filler, you can use wheat with moisture content of 14-15% and 75-80% of the extrudable mass. In this humidity extrudable thistle, is within 22-24%.