Flours and Fortified Blended Foods (FBF):

• Processed cereals and oilseeds such as maize meal, wheat flour, bulgur wheat and soyabean meal are more susceptible to biological and chemical deterioration because activities such as milling permit interaction between enzymes and fats with other grain constituents. Processing generally makes the product more susceptible to insect attack. Therefore, these commodities have a shorter shelf-life than whole grains.
• Several processed cereal products may be fortified with minerals and vitamins, which are sentitive to heat, moisture and other adverse conditions present in tropical countries.
• The storage of milled or processed products frequently requires a far higher standard of storage management to ensure minimum losses. Commodities with low bulk densities (calculated by dividing weight by volume) require large storage capacities per tonne.
• The protein and mineral-vitamin-fortified processed foods, such as CSB, are designed for general use in feeding programmes which serve children and adults. 
• In addition to the traditional CSB, WSB, MML, etc, locally made product such as Heps in Zambia, Faffa in Ethiopia, Lukini phala in Malawi or Unilito in Nepal are also fortified blended foods.
• The handling of these commodities requires special care. It is essential to maintain the integrity of the package.
• The avoidance of wetting during unloading, in transit or in store, is very important.