Germination induces the glucosylation of the Fusarium mycotoxin deoxynivalenol in various grains

► Deoxynivalenol (DON) can be transformed into DON-3-glucoside (D3G) during germination. ► Wheat, barley, and spelt transform up to 50% of initial DON into D3G. ► Oats catalyses no formation of D3G. ► In processed food and brewing malt DON contents may be underestimated significantly.