· Six micro mineral nutrients (MMNs), namely, Fe, Zn, Mn, Cu, B and Mo are common essential nutrients in plants, animals and humans. Of these, the deficiencies of Fe and Zn in humans and that of Zn, Mn and Cu in animals are widespread. About onethird of the world human population, mostly in developing countries, is prone to Fe and Zn malnutrition. The clinical symptoms of Fe deficiency in ...