Ghanshyam Citrus fruits, such as oranges, lemons, limes, tangerines, grapefruits, kiwis, strawberries, apples, pears, cherries, and raspberries, as well as vegetables, such potatoes, tomatoes, peas, and asparagus, are rich sources of naturally occurring citric acid.It is a crystalline acid with a strong flavor that is found in lemons and other sour fruits. Commercial production involves fermenting sugar. serves as a preservative, flavoring, and antistaling agent in the food and beverage sector.Gargling with a solution of water and citric acid helps to kill bacteria and clear up throat infections. In the chemical, cosmetics, and cleaning industries, citric acid is employed as a detergent, plasticizer, and antioxidant.