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Phenolic compounds extraction from distilled, ground rosemary leaves at different acetone concentration in the aqueous solution, 22 °C, and the solid-to-liquid ratio of 1:20 g/mL. (A) Experimental values of total phenols recovery (TPC) versus extraction time; (B) the factor ln(C∞ − Ct) versus extraction time, approximation curves based on the diffusion model, according to Equation (1).
