And Sulfur Dioxide

Sulfur dioxide is a gas that occurs naturally in small amounts. It is made industrially by burning sulfur or by heating metal sulfides. It is often used in food as a preservative.

Sulfur dioxide and sulfites are used as preservatives to prevent spoilage and maintain the color of foods. They work by inhibiting the growth of bacteria, yeasts, and molds. They are commonly found in dried fruits, wine, and some processed vegetables.

Sulfur dioxide is generally recognized as safe (GRAS) by the FDA when used as a food additive. However, some individuals, particularly those with asthma, may be sensitive to sulfites and experience allergic-type reactions. JECFA has evaluated sulfur dioxide and set an acceptable daily intake. EFSA has also evaluated sulfites and found them to be safe for the general population at typical consumption levels.