Sodium Bisulfite And Citric Acid Added As Preservatives

Sodium bisulfite is a chemical compound that is a salt of sulfurous acid. It is often used in combination with citric acid, a naturally occurring weak organic acid found in citrus fruits. Together, they act as preservatives to maintain the quality and extend the shelf life of food products.

Sodium bisulfite and citric acid are added to foods primarily as preservatives and antioxidants. They help prevent spoilage by inhibiting the growth of microorganisms and preventing undesirable color and flavor changes caused by oxidation. They are commonly found in processed foods like dried fruits, baked goods, and some seafood.

Sodium bisulfite is generally recognized as safe (GRAS) by the FDA when used according to good manufacturing practices. However, it can cause allergic-type reactions in some individuals, particularly those with asthma. The WHO and JECFA have evaluated sulfites and established acceptable daily intake levels. Evidence on other health effects at typical intake levels is mixed, and ongoing research continues.