The study of deoxynivalenol and its masked metabolites fate during the brewing process realised by UPLC-TOFMS method

► Conjugated form of deoxynivalenol, DON-3-Glucoside (DON-3-Glc) is ubiquitous contaminant of beer. ► DONPREP immunoaffinity columns are cross-reacting to DON-3-Glc. ► Levels of DON and DON-3-Glc can increase significantly within the brewing process. ► There is no correlation between levels of mycotoxins in malt and final beer.