HEAT AND PH ALTER THE CONCENTRATION OF DEOXYNIVALENOL IN AN AQUEOUS ENVIRONMENT

The effects of heat (100, 120, and 170 degrees C) and pH (4.0, 7.0, an d 10.0) on the stability of deoxynivalenol (DON) were measured in an a queous buffer solution for different periods of time (15, 30, and 60 m in). At pH 4.0 DON appeared to be very stable showing no destruction a t 100 or 120 degrees C and only partial destruction at 170 degrees C a fter 60 min. At pH 7.0 DON was still stable but showed more destructio n at 170 degrees C after 15 min. At pH 10.0 DON was partially destroye d at 100 degrees C after 60 min and was totally destroyed at 120 degre es C after 30 min and at 170 degrees C after 15 min.