Potassium Benzoate Preservative

Potassium benzoate is the potassium salt of benzoic acid. It is produced when benzoic acid is neutralized with potassium hydroxide. Benzoic acid is found naturally in small amounts in many plants, such as cranberries and plums, but is typically manufactured synthetically for food use.

Potassium benzoate is used as a preservative to prevent the growth of mold, yeast, and bacteria in foods and beverages. It is most effective in acidic conditions. It is commonly found in acidic foods like sodas, fruit juices, pickles, and salad dressings.

Potassium benzoate is generally recognized as safe (GRAS) by the FDA for use as a food preservative. It is also approved for use in the European Union. JECFA and EFSA have evaluated potassium benzoate and its related compound, sodium benzoate. Some studies have raised concerns about the potential for benzoic acid and its salts to cause hyperactivity in children, but scientific reviews have not found consistent evidence to support this link at typical intake levels. In combination with ascorbic acid (Vitamin C), it can form small amounts of benzene, a potential carcinogen, under certain conditions like heat and light exposure, leading manufacturers to monitor and control these levels.