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Explain Functions of Ascorbic Acid?
Vitamin C is easily oxidized, and the majority of its functions in vivo rely on this property. It plays a key role in the body's synthesis of collagen and nor epinephrine by keeping the enzymes responsible for these processes in their active reduced form. Vitamin C may also play a role in detoxifying by products of respiration. Occasionally during respiration, O2 is incompletely reduced to superoxide ion (O2-) instead of being reduced completely to its -2 oxidation state (as in H2O). Normally an enzyme called superoxide dismutase converts O2- to H2 O2 and O2 , but in the presence of Fe2+, the hydrogen peroxide may be converted into the highly-reactive hydroxyl radical (OH). The hydroxyl radical can initiate unwanted and deleterious chemistry within a cell when it removes a hydrogen atom (H) from an organic compound to form H2O and a new, potentially more reactive free radical. Ascorbic acid can donate a hydrogen atom to a free radical, and thus stop these reactions from occurring. The role of ascorbic acid as an antioxidant, therefore, is of prime importance.
Explain Interactions of Macrominerals With Other Nutrients? Various nutrients interact with minerals thereby affecting their bioavailability. These interactions occur at differ
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