Ans: Benzoic acid can be found in very low ppb levels in some of the beverages that include both ascorbic acid as well as benzoate salts/erythorbic acid, also recognized as d-ascorbic acid. Exposure to light as well as heat can result in stimulating the absorption of the compound in few beverages which have ascorbic or benzoate salts. Potassium, as well as sodium, can be added to beverages to stop the growth of fungus, yeast and bacteria.