Anhydrous Citric Acid is a tricarboxylic acid found in citrus fruits. Citric acid is used as an excipient in pharmaceutical preparations due to its antioxidant properties. It maintains stability of active ingredients and is used as a preservative.
Because it is one of the stronger edible acids, the dominant use of citric acid is as a flavoring and preservative in food and beverages, especially soft drinks and candies. ... It has use in culinary applications, as an alternative to vinegar or lemon juice, where a pure acid is needed.
There are many uses for this dry form of citric acid. It can be used in flavorings, cosmetics, candy, gelatin, jams, jellies, soft drinks and fruit. It has the ability to retard discoloration and retain flavor and vitamins.