Direct characterisation of phenolic antioxidants in infusions from four Mapuche medicinal plants by liquid chromatography with diode array detection (HPLC-DAD) and electrospray ionisation tandem mass spectrometry (HPLC-ESI-MS)

► Qualitative analysis of phenolics in Chilean medicinal plants teas. ► Phenolics in infusions were characterised by HPLC-DAD and HPLC-ESI-MS. ► Phenolic acids, flavonoid glycosides, anthocyanins and tannins were identified. ► Quinchamalium chilensis showed better antioxidant activity.