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Ascorbic acid is an essential nutrient, and required for various metabolic activities in humans. Typically citrus
fruits, vegetables and organ meat are good source of Vitamin C. It acts as strong antioxidant and act as a scavenger in
defence against free radical oxygen species. It has also contributed to rejuvenate photo aged skin. It has ability to control
the pigmentation of melanin by inhibiting the enzyme tyrosinase by interacting with copper ions. It serves as a coantioxidant with vitamin E to regenerate alpha tocopherol, thereby retards cellular damage. Ascorbic acid is deprotonated
to form ascorbate anion, contributes to its prooxidant properties and act as a potential anti-cancer agent. It reduces the
mutation rate in mismatch-repair deficient human colon cancer cells. Ascorbic acid is a phytochemical has micronutrients
that act against the inflammation in arthritis. Currently, challenges lies finding most stable formulation for achieving
optimum results as shown in Fig. 1.
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