Use of advanced techniques for the extraction of phenolic compounds from Tunisian olive leaves: Phenolic composition and cytotoxicity against human breast cancer cells

► Characterization of olive leaves extracts by using HPLC coupled to ESI-TOF-MS and ESI-IT-MS2. ► Comparison among different advanced extraction techniques such as MAE, SFE, PLE and SLE. ► Cytotoxic activity against breast cancer cells has been tested.