FORMATION OF FUNCTIONAL AND TECHNOLOGICAL PROPERTIES OF THE FILM FROM INTESTINAL RAW MATERIALS DURING THE DRYING PROCESS

The purpose of the research is formation of the functional and technological properties of a multi-purpose film from intestinal raw materials during drying. Its hygroscopic properties after drying at temperatures ranging from 40 to 70 degrees C were studied. It was established that the increase of the drying temperature leads to the decrease in the amount of moisture that the sample absorbs from the environment. Ranges of relative air humidity at which it is possible to store dried products in vapor-permeable packaging have been determined. It is noted that the storage of the multifunctional film is possible in a vapor-tight package with an increase in air humidity relative to the recommended ranges. The operations of packing dried film and making sausage casings from it, which follow after drying operation, are described. It was noted, that during these operations there are mechanical deformations of the film bending at angles up to 180 degrees. It was established, that there is no violation of the integrity of the film, provided that it is bent to an angle of 180 degrees during the packaging of finished products and the production of sausage casings from it. The integrity of the manufactured casings after their recovery during the production of sausage products has been proven. The elastic-plastic properties of the intestinal raw material film obtained at different drying temperatures were investigated. It was found, that strength of the film increases and its plasticity decreases in case of increasing the drying temperature. It is noted that, from the point of view of strength, the highest drying temperature from the range of 40- - 70 degrees & Scy;. From the point of view of plastic properties, the minimum temperature should be chosen from the specified range. Studies of the drying process of a wet multifunctional film from intestinal raw materials have determined the rational values of the temperature and duration of the its drying. It is noted that during the selection of the drying temperature in the technology of obtaining a multifunctional film from intestinal raw materials, the determining factor is the functional and technological properties of the obtained semi-finished product, which depend on the drying temperature.