The separation of natural bioactive homologues is the key process in the valorization of natural bioactive compounds, but current separation methods such as the adsorption chromatography technology have problems such as low capacity, large solvent consumption and significant energy consumption. Based on the unique properties of ionic liquids (ILs) such as task-specific tunability and good ability to form liquid-liquid biphasic systems, a novel method for the selective separation of natural bioactive homolog...