Effect of ozonation on aflatoxins production in wheat grains during storage Ozone gas is a powerful oxidant capable of reaction with numerous chemical groups. Ozone is a powerful oxidising agent with a demonstrated ability to reduce populations of bacteria and fungi in a diversity of use situations. This powerful oxidant makes it possible to destroy many micro-organisms and organic molecules. Ozone was approved as a generally recognized as safe (GRAS) in 1997 by FDA, this reagent is more and more used for food treatment as grain