Özet:

We report results of experimental research into the process of acidic extraction of pectin-containing raw material (beet pulp) using the new model of the stirring element compared with the conventional grid stirrer. We have designed the experimental installation and devised a procedure for processing the results of studying the extraction process of pectin substances from pectin-containing raw materials (beet pulp), using the new combined stirring element. Mathematical models were constructed in the form of nonlinear regression equations based on the multifactor experiment planning method that employed input parameters of temperature, duration, and hydromodule. It was established that the principal influence on a change in the output parameters is exerted by the input variables of temperature and duration of the process. We show graphical dependences for quantitative and qualitative characteristics of pectin extracts (pectic substances concentration, molecular weight, complex- and gel-forming capability) depending on the input parameters of temperature and duration of the process for extraction of pectic substances. An analysis of these characteristics allowed us to determine the rational input parameters for the process of extraction of pectin substances. The rational working parameters of the process of acidic extraction of pectin substances from sugar beet pulp with the application of the new method for intensifying the process, are: temperature is 60...70 °C, duration is 1…1.1 hours, and hydromodule is 8...10. The purpose of this study was to intensify the extraction of pectic substances from pectin-containing raw materials, to improve technical level of the extraction process and to implement the developed method under industrial conditions. Based on the research results, the feasibility of the new method for intensification was established. Further implementation of these results in the food and processing industries would make it possible to produce a wide assortment of pectin-products (extracts, liquid and dry pectin concentrates). Author Biographies Grygoriy Deynychenko, Kharkiv State University of Food Technology and Trade Klochkivska str., 333, Kharkiv, Ukraine, 61051 Doctor of Technical Sciences, Professor, Head of Department Department of equipment for food and hospitality industry named after M. I. Belyaeva

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