Reading the article “Wood Pellet Combustible Dust Incidents” of John Astad, I remembered the following.
All biological products are subject to deterioration.
This deterioration is caused by micro organisms (bacteria and micro flora)
To prevent bacterial deterioration, it is necessary to condition the circumstances in such a way that micro organisms cannot grow.
1) By killing the micro organisms through sterilization, pasteurization or conservation. In transport also the gassing with methyl bromide is common but not without danger.
2) Creating an environment that micro organisms cannot develop by f.i. adding acids, salt, sweet or drying and cooling.
In storing cereals, grains, seeds, and derivatives, drying is the mostly used method to prevent bacterial heating.
To prevent bacterial deterioration those materials need to be DRY before storing.