Abstract
The aim of the study was the provision of a technological background for obtaining ethanol extracts with prospective cosmetic application from the leaves of P. alkekengi L. Extraction was carried out in laboratory conditions, as a batch static mode process, with four solvents, 95%, 70%, 50%, and 30% ethanol, respectively. The influence of the main technological factors, temperature (20°C, 40°C, and 60°C) and duration (1 h, 3 h, 5 h and 7 h), upon the content of tannins in the extracts was studied by mathematical modelling of the experiment. The equations of extraction, based on the concentration of extracted tannins were derived. The optimal conditions for the extraction procedure of P. alkekengi leaves were determined (70% ethanol, 5 h, 60°C). The results from the study, i.e. the dynamics of tannin extraction, the equations of extraction and the technological factors’ combination, could be applied in the obtaining of P. alkekengi leaf extraction products intended for use in different personal care products; of course, additional investigations on the subject are necessary, especially in terms of extracts’ individual composition and biological activities.
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