Iron is important for the formation of hemoglobin,myoglobin and other substances such as cytocromes,cytocromes oxydase,peroxidase and catalase enzyme.
Iron Requirements:
In a normal adult very little iron is lost from the body,man lose 0.6 mg per day,wemen lose double this amount becouse of the additional iron losr during menstruation.The amount of iron absorbed is equal to the amount lost,if it wear any greated iron overload would develop.
Iron Absorption:
Iron is absorbed from all parts of the small intestine.Iron is more readily absorbed in the ferrous state but most of the dietary iron is in the ferric form.Only a trace of iron is absorbed in the stomach,but gastric secretions especially hydrochloric acid,dissolve the iron and to permit it to form soluble complexes with ascorbic acid that helps its reduction to the ferrous form.
The importance of this function is indicated by the fact that iron defeciency anemia is a frequent complication of partial gastrectomy.Iron absorption occurs through secretion of protein,apotransferrin by the liver which passes to the small intestine through ble.
When iron is absorbed from the small intestine,it imediatly combines with apotransferrin to form transferrin.This is a lose combination and iron can be released at any point in the body.
Excess iron in the blood can be deposited in all cells of the body.
When the bady has become saturated with iron so that all of the apoferitin in the iron storage areas is already combined with iron,the rate absorption decreases.
Source of Iron in Foods:
Boild Organs
-liver,fish,kidney,heart,goose,shrimps,tongue
Vegetal:
-thyme,curry powder,cinnamon,wheat bran,paprika,bran flakes,cereals,soya,hazelnuts,almonds
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