A modified QuEChERS method as sample treatment before the determination of isoflavones in foods by ultra-performance liquid chromatography-triple quadrupole mass spectrometry

► Extraction and determination of isoflavones by QuEChERS-LC-MS/MS. ► A modified approach of the QuEChERS methodology to extract isoflavones from food samples. ► Extraction of free and conjugated isoflavones in their natural form in pulses. ► Determination of isoflavones in pulses.