Ascorbic Acid is not vitamin C. It is a white powder derived from glucose that is used as a vitamin C additive and antioxidant preservative, Ascorbic Acid is frequently found in jellies, juices, baked goods, and dried fruit. It is used in canning fruits and vegetables to increase acidity. Ascorbic Acid prevents discolouring and can be added to green vegetables to ensure a vibrant colour after processing. It is also used in bread baking to strengthen gluten during long fermentations.