Ascorbic acid or Vitamin C is required for the formation of intercellular in
the body, including dentine, cartilage, and the protein network of bone. Hence, it is very important in tooth formation, the healing of the broken bone, and the healing of wounds. 
It may be important to oxidations-reduction reactions in the body and to the production of certain hormones. Deficiency of vitamin C causes scurvy (spongy gums, loose teeth, swollen joints, hemorrhages in various tissue, etc) and impaired healing of wounds.
Orange juice is an excellent of vitamin C. Tomato juice, if it has been processed properly, is a fair source of this vitamin.
Green peeper, cabbage, broccoli, and Brussels sprouts are excellent to good sources of vitamin C, while other vegetable such as peas, spinach and lettuce are good to fair sources. Many fruits contains fair amount of vitamin C.
Food Ingredient
