Preservative: Sodium Bisulfite
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What it is
Sodium bisulfite is a chemical compound that is a salt of sulfurous acid. It is typically produced by reacting sulfur dioxide with a solution of sodium carbonate or sodium hydroxide. It appears as a white crystalline powder.
Why it's used
Sodium bisulfite is used as a preservative and antioxidant in many food products. It helps prevent spoilage by inhibiting the growth of bacteria and fungi, and it also prevents browning in fruits and vegetables. It is commonly found in dried fruits, processed potatoes, and some beverages.
Health notes
Sodium bisulfite is generally recognized as safe (GRAS) by the FDA when used according to good manufacturing practices. It can cause allergic reactions in some individuals, particularly those with asthma. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated sodium bisulfite and established an acceptable daily intake. Evidence regarding its long-term health effects at typical consumption levels is mixed, with some studies suggesting potential concerns and others finding no significant adverse effects.
Allergen info
Not a major allergen. It does not contain gluten.