1. Calcium (Ca): Bone and teeth formation, blood clotting.
2. Chlorine (CI): Maintains acid-base balance.
3. Cobalt (Co): Essential for Haemopoesis.
4. Copper (Cu): Melanin and Haemoglobin synthesis.
5. Fluorine (F): Contributes in bone and teeth formation, prevents
6. Iron (Fe): Constituent of haemoglobin, enzymes and cytochromes.
7. Iodine (I): Constituent of thyroid hormone.
8. Potassium (K): Constituent of bone, blood plasma, required for energy
9. Magnesium : Constituent of coenzymes, (Mg)required for carbohydrate and protein metabolism.
10. Manganese : Enzyme activator, required (Mn)in urea formation and Kreb’s cycle.
11. Sodium (Na) : Required in active transport system, maintains body fluid and ionic balance. Main positive ion in Extracellular fluid.
12. Phosphorus : Constituent of RNA, DNA (P) and ATP essential for energy metabolism.
13. Sulphur (S): Detoxification and protein formation.
14. Selenium(Sc) : Fat metabolism.
15. Zinc (Zn): Wound healing, fertilizalion, constituent of enzymes.