L-ascorbic acid (also known as Vitamin C) is a water soluble organic compound involved in many biological processes. The only way human uptake ascorbic acid is via food, but the daily needs of vitamin C for a human are not clear yet. In the food industry Vitamin C is used a vitamin as well as an antioxidant and preservative. food that has ascorbic acid https://www.creative-diagnostics.com/food-analysis/tag-vitamin-c-l-ascorbic-acid-48.htm