Potassium Sorbate And Sodium Benzoate As Preservative

Potassium sorbate and sodium benzoate are salts of sorbic acid and benzoic acid, respectively. They are often used together as antimicrobial preservatives in foods. These compounds are synthesized industrially.

Manufacturers add potassium sorbate and sodium benzoate to help prevent the growth of mold, yeast, and bacteria, thereby extending the shelf life of food products. They are commonly found in acidic foods like salad dressings, sauces, pickles, and beverages.

Potassium sorbate and sodium benzoate are permitted food additives in the US. The FDA lists them as Generally Recognized As Safe (GRAS) for their intended use. Both compounds have been evaluated by JECFA and EFSA. While generally considered safe at typical consumption levels, some studies have explored potential links between sodium benzoate and hyperactivity in children, though evidence is mixed and not conclusive. Concerns have also been raised about the formation of benzene when sodium benzoate is combined with ascorbic acid (Vitamin C) in beverages, though levels are typically very low.