Potassium Sorbate And Sodium Bisulfite As Preservatives

Potassium sorbate is the potassium salt of sorbic acid, a naturally occurring organic compound. It is typically produced industrially through a chemical reaction involving potassium hydroxide and sorbic acid. Sodium bisulfite is a salt of bisulfite, often produced from sulfur dioxide and sodium hydroxide or sodium carbonate.

These compounds are used together as preservatives to inhibit the growth of mold, yeast, and bacteria in foods. They help extend shelf life by preventing spoilage. They are commonly found in products like sauces, dressings, baked goods, and dried fruits.

Potassium sorbate is generally recognized as safe (GRAS) by the FDA. Sodium bisulfite is also approved by the FDA as a food additive, primarily used as a preservative and antioxidant. Both have been evaluated by international bodies like JECFA and EFSA, which have established acceptable daily intake levels. While generally considered safe at typical consumption levels, some individuals may experience sensitivities or allergic-type reactions to sulfites, including asthma exacerbation in sensitive individuals.