Abstract
The purpose of the study is to develop a technology for the production of dried blackberry extracts. Basic extraction parameters are established. The influence of the technological parameters of the extraction process on the content of phenolcarboxylic acids in blackberry extracts is analyzed. The extracts obtained were determined with the amount of phenolcarboxylic acids for use in enriching fruit juices with biologically active substances. The effect of the type of extractant, the duration and temperature of the extraction and the hydromodule on the color parameters were investigated. The results of the planned experiment were statistically processed with the Statistica program. The residuals were estimated and analyzed by normal probability of the residual schedule, the scatterplot of the residuals from the predicted values, and the frequency histogram of the residuals. All results are presented analytically and graphically.
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