Optimization of the process of obtaining extracts in the field of low-frequency mechanical vibrations

The use of extracts obtained from fruit and berry raw materials has long found application in the alimentary industry. So, their use allows to get a finished food product not only with unique natural organoleptic characteristics, but also to increase the nutritional value of the finished food product. At the same time, the processing of local wild-growing fruit and berry raw materials is of great importance for the economy of many regions. However, a limiting factor in obtaining extracts from fruit and berry raw materials is the lack of a highly efficient and flexible technology based on modern extraction methods. The paper considers a modern method of obtaining extracts from frozen fruit and berry raw materials in the field of low-frequency mechanical vibrations. The method is not only effective from the point of view of obtaining extracts with a high content of target components, but also allows to reduce the number of pieces of equipment in the technological chain of production, which increases the simplicity in reconfiguring the line for other types of raw materials. At the same time, the limiting factor in the use of this method is its low exploration degree and, as a consequence, the lack of rational values for the process. On the basis of literature sources and a series of experiments, the main parameters that affect the efficiency of the process, i.e the final concentration of the target components in the finished extract, have been determined. To find the rational values of these parameters, a series of experiments was carried out. The data obtained were processed, and regression equations were obtained for the dependence of the yield of the target components into the extractant (water) on the main parameters affecting the process for two types of raw materials - cranberries and blueberries. The resulting equations were optimized to find rational parameters. Based on the results obtained, a control series of experiments was carried out, confirming that the parameters found are rational and the values of the yield of the target components in practice do not differ by more than 5% from the those obtained analytically.