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The application of Chrastil’s equation for the description of the solubility of ursolic acid and β-sitosterol in supercritical carbon dioxide. Symbols: black lines and circles—ursolic acid, blue lines and squares—β-sitosterol, solid lines—40 °C, long-dashed lines—60 °C, short-dashed lines—80 °C, green markers—10 MPa, yellow markers—20 MPa, red markers—30 MPa.
