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Values of Kamlet–Taft solvatochromic parameters and Dimroth–Reichardt energy are determined via UV spectroscopy for carbon dioxide–alcohol (ethanol, isopropanol) mixtures at temperatures of 295−353 K and pressures of 100−300 atm in a wide range of component ratios.

—The optimum parameters of oil extraction from the processed fruit of mountain ash (Sorbus aucuparia) were determined using the second-order rotable composite design: pressure 321 atm, temperature 85°С, and extraction time 72 min. The predicted yield of oil expected under these conditions (9.06%) was confirmed experimentally (9.02%). The antioxidant activity (AOA); fatty acid composition; and acid, iodine, and saponification numbers of the oil extract were determined. For comparison, the oil obtained by extraction with n-hexane was used.