Aspartame Potassium Benzoate

Aspartame Potassium Benzoate refers to a product containing two distinct food additives: aspartame and potassium benzoate. Aspartame is an artificial sweetener made from two amino acids, aspartic acid and phenylalanine. Potassium benzoate is a chemical preservative, the potassium salt of benzoic acid, which can be found naturally in some fruits.

Aspartame is added to provide sweetness without calories, making products 'sugar-free' or 'diet'. Potassium benzoate is used to prevent the growth of mold, yeast, and bacteria, extending the shelf life of acidic foods and beverages. Together, they are commonly found in diet sodas, sparkling water, and other low-calorie or sugar-free drinks.

Both aspartame and potassium benzoate are approved by the FDA as food additives. JECFA has evaluated both and set an acceptable daily intake for each. In 2023, the International Agency for Research on Cancer (IARC) classified aspartame as possibly carcinogenic to humans (Group 2B), while JECFA maintained its existing acceptable daily intake. Aspartame contains phenylalanine, so individuals with the genetic disorder phenylketonuria (PKU) must avoid it. Potassium benzoate is generally considered safe at typical intake levels, but it can form small amounts of benzene when combined with ascorbic acid (Vitamin C) in the presence of heat and light, though levels in beverages are usually very low.