Формирование структуры дисперсных систем в неравновесном состоянии в условиях совмещения двух видов кавитационных воздействий
2020
The description of the existing method for producing invert syrup in stages in a large volume under the conditions of using one type of energy flow is given. The purpose of this work is to develop the principles of transition from macrostatic equilibrium to the development of each microstatic volume of liquid dispersed systems in the process of their production in a non-equilibrium state created by the combination of two types of cavitation effects: hydrodynamic and acoustic effects. The properties of dispersed systems are described and the object of research is invert syrup with the amount of dry 80% and reducing 79-80% substances. Invert syrup with 100% inversion of sucrose to glucose and fructose is widely used in the production of flour confectionery and a number of pastille and marmalade products. The principles of formation of aggregates from sucrose molecules at the stage of sugar dissolution, the formation of voids and the nucleation of gas phase bubbles are established. The conditions for creating a non-equilibrium state of syrup under the conditions of using two types of energy flows, by combining hydrodynamic and acoustic cavitation, are considered. The character of the transformation of the state of bubbles under conditions of changing the flow geometry of gas-liquid systems and the excitation of sound vibrations in them is shown. The mechanism of structure formation of a gas-liquid system under the influence of acoustic vibrations on the structure is described. The character of transformation of highly concentrated gas-liquid systems after the collapse of gas phase bubbles is shown, which was the determining factor in the formation of new types of materials. The practical output of this work was the creation of invert syrup with 100% fructose and glucose content in dry substances. Preparation of an emulsion for flour confectionery products and marmalade based on fresh fruits and vegetables. The effectiveness of combining two types of cavitation exposure opens up the prospect of creating new types of confectionery products with fundamentally new properties, while preserving native vitamins and nutrients.
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