Used And To Maintain Color
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What it is
Sulfur dioxide (SO2) is a gas used as a preservative. It is produced industrially by burning sulfur in air or by heating metal sulfides. It can also be found naturally in small amounts in some foods and beverages.
Why it's used
Sulfur dioxide is primarily used to prevent spoilage and maintain the color of foods. It acts as an antioxidant and antimicrobial agent. It is commonly found in dried fruits, juices, and some processed foods.
Health notes
Sulfur dioxide is generally recognized as safe (GRAS) by the FDA when used as a food additive. It can cause allergic-type reactions in sensitive individuals, particularly those with asthma. JECFA has evaluated sulfur dioxide and set an acceptable daily intake. EFSA has also evaluated its safety.
Allergen info
Sulfur dioxide is not one of the 9 FDA major allergens. It does not contain gluten.