Sodium Metabisulfite And Potassium Sorbate

Sodium metabisulfite and potassium sorbate are two different food additives often used together. Sodium metabisulfite is a white crystalline powder made from sulfur dioxide. Potassium sorbate is a potassium salt of sorbic acid, a naturally occurring compound, and is produced synthetically.

These additives act as preservatives. Sodium metabisulfite inhibits microbial growth and prevents oxidation, while potassium sorbate is effective against molds and yeasts. They are commonly found in dried fruits, wine, baked goods, and processed produce to extend shelf life and maintain quality.

Both sodium metabisulfite and potassium sorbate are permitted food additives in the US. Sodium metabisulfite can trigger allergic-type reactions in sensitive individuals, particularly those with asthma. JECFA and EFSA have evaluated both substances and established acceptable daily intakes. Evidence regarding long-term health effects at typical consumption levels is generally reassuring, but some individuals may experience sensitivities.