Non-GMO USP Citric Acid is a naturally occurring, weak, organic acid, anhydrous citric acid is known to be an effective preservative. Produced from glucose syrup derived from cassava, citric acid is a dry, crystalline, odorless substance carrying a strong acidic taste. Non-toxic and low reactive citric acid is widely used as an organic acidulant and pH-control agent in food, personal care, beverage, health and various technical applications. .