The object of the research was diffusion juice obtained from bacterially infected sugar beet roots. The purpose of the work was to establish the laws of changing the quality of diffusion juice in sugar beet production when using the enzyme preparation Dextrasept 2 in the process of extraction of sucrose from bacterially infected sugar beets. As a result of the studies, the dependences of the change in the quality indicators of diffusion juice on the degree of bacterial infection of the root cell juice and the doses of the enzyme preparation Dextrasept 2 were determined. Regression equations are obtained that are suitable for calculating the dose of the applied enzyme preparation Dextrasept 2, depending on the degree of bacterial infection of the cell juice of sugar beet roots, oriented towards achieving the specified values of the quality indicators of diffusion juice. A multicriterial assessment on the Harrington desirability scale ranging from 0.66 to 1.00 confirmed the expediency of the application of enzyme preparation Dextrasept 2 at a dose of 4 to 8 kg per 1,000 ton of sugar beet with a level of bacterial infection within the presence of 2…8 “clouds” (mucous membranes inclusions) in the cell juice of the roots. It was found out that the use of the enzyme preparation improved the technological parameters of diffusion juice, increased sucrose content in it by an average 2 %, which could contribute to improving the quality and yield of white sugar.

In the technology of beet sugar, technological aids play a special role, but the effectiveness of their complex application in the processing of bacterially infected sugar beets requires study. A three-factor laboratory experiment was carried out on the basis of the D-optimal Box-Behnken plan of the second order for three levels of variation of the studied factors the enzyme preparation Dextrasept 2, the antimicrobial agent Betacept and the defoamer Voltes FSS 93. The quality of 15 studied indicators of the state of intermediate products of the processes of obtaining and purification of diffusion juice, syrup was determined according to the generally accepted methods. The obtained regression equations adequately reflected the combined effect of these drugs on the state indicators. The highest variability (24.2-39.0%) was observed for the turbidity of juices and syrup, and the deposition rate; тhe chromaticity, the content of high-molecular compounds, lactic acid, and the height of the foam column were characterized by an average variation (12.7-17.8%). The sucrose content and the overall effect of purification of diffusion juice changed insignificantly (0.4-3.0%). Сontribution of the enzyme preparation to the variation of 6 indicators was more than 45%, 7 – 3942% and 2 – less than 10%. Under the influence of the antimicrobial agent, 6 indicators changed by more than 45%, 5 – 33-43% and 4 – less than 30%.