Alkaloid-rich vs. antioxidant-rich yerba mate (Ilex paraguariensis) extracts: Exploiting the selectivity of supercritical CO2 using hydrated ethanol as co-solvent

•Content of alkaloids and antioxidants in yerba mate extracts obtained with scCO2.•Use of ethanol as cosolvent to enhance process extraction yield.•Hydrated solvent favors extraction of antioxidants instead of that of alkaloids.•Control of extract composition profile for the development of nutraceutical products.