Phosphorus

PROPERTIES, FUNCTION AND SOURCES OF PHOSPHORUS

1. PHOSPHORUS Submitted by: UMESH MASKARE M.Sc (FST) 1 st year

2. German chemist   Hennig Brand  in 1669 , discovered phosphorus from urine. Urine was having considerable quantities of dissolved phosphates from normal metabolism . In 1769  Johan Gottlieb Gahn  and  Carl Wilhelm Scheele  showed that calcium phosphate is found in bones, and they obtained elemental phosphorus from bone ash. HISTORY

3. It is generally colourless . It is odourless . It is non-volatile. PROPERTIES

4. Phosphorus plays a major role in the structural framework of  DNA and   RNA . Living cells use phosphate to transport cellular energy in the form of   adenosine triphosphate  (ATP ). Phospholipids  are the main structural components of all cellular membranes . Calcium phosphate salts assist in stiffening  bones . Role

5. Milk Meat Soyabean products Eggs Seeds and nuts Fruits and vegetable Sources

6. It is absorped after release of Parathyroid hormone due to low phosphorus level. Its absorption also requires presence of vitamin D binding complex to get it absorped through small intestine. Nearly 70-80% of phosphorus absorped is bound to food we eat. Other minerals have the same site for absorption and hence compete with it hindering absorption of phosphorus. Absorption

7. 0 to 6 months: 100 mg/day 7 to 12 months: 275 mg/day 1 to 3 years: 460 mg/day 4 to 8 years: 500 mg/day 9 to 18 years: 1,250 mg Adults: 700 mg/day Pregnant or lactating women: Younger 1,250 mg/day RECOMMENDED DIETARY ALLOWANCES

8. HYPO PHOSPHATEMIA : Low levels of soluble phosphate in the blood serum and inside the cells . Symptoms: N eurological dysfunction and disruption of muscle and blood cells due to lack of ATP . HYPER PHOSHATEMIA: Too much phosphate. Symptoms: diarrhoea and calcification (hardening) of organs and soft tissue. Deficiency

9. Phosphorus is an important mineral. It has various vital role in proper functioning and metabolism of body. R equired amount of phosphorus should be consumed so that no deficiency will occur. Conclusion

10. Thank you