In  this  paper  we  present  results  that  indicate  how electromagnetic irradiation influences aflatoxin B1 (AFB1) concentration in nuts.  The  aflatoxin  level  was  determined  by  the  immunoaffinity chromatography  with  fluorimetric  detection.  First,  peanuts  as  certified reference  material  (initial  AFB1  level  fixed  at  39.1  ng/g)  underwent exposure  to  UV,  gamma  and  microwave  radiation.  Decrease  of  aflatoxin content  was  strongly  correlated  with  thickness  of  irradiated  sample  layer. 2mm  layer  samples  exposed  to  ultraviolet  for  30  min  resulted  in  AFB1 concentration  drop  by  49.3%,  but  10  mm replicas de relojes españa  layer  samples  exhibited  limited UV  penetration  into  the  material,  giving  comparatively  weaker  drop  in AFB1. In the samples exposed to microwave radiation in the range of 36 kJ - 150 kJ the residual aflatoxin content was about 50.0%, hardly depending on a  dose  of  energy.  The  gamma  radiation  proved  to  be  the  most  effective method. Individual samples exposed to 2.5 kGy, 5 kGy, 7.5 kGy and 10 kGy gamma  radiation  dose  exhibited  AFB1  concentration  reduction  by  56.8%, 57.8%,  60.9%  and  74.3%,  respectively.  Next,  we  used  this  method  to  the decrease  of  aflatoxin  content  in  commercial  nut  products  by  exposure  to 10 kGy dose of gamma radiation. We received the residual aflatoxin content less than 40% for almonds.