Potassium Sorbate And Potassium Metabisulfite

Potassium sorbate is the potassium salt of sorbic acid. It is a synthetic compound often used as a preservative. Potassium metabisulfite is a salt of metabisulfuric acid, typically produced from sulfur dioxide.

These compounds are used together as antimicrobial preservatives. They help prevent the growth of mold, yeast, and bacteria, extending the shelf life of various food products. They are commonly found in baked goods, cheese, dried fruits, and beverages.

Potassium sorbate is generally recognized as safe (GRAS) by the FDA. JECFA and EFSA have evaluated potassium sorbate and established acceptable daily intakes. Potassium metabisulfite is also approved by the FDA as a preservative. JECFA and EFSA have also evaluated potassium metabisulfite. Some individuals may experience sensitivity or allergic reactions to sulfites, including potassium metabisulfite, which can manifest as hives or asthma symptoms, particularly in those with existing sulfite sensitivity.