Sulfites To Preserve Freshness

Sulfites are a group of chemical compounds containing sulfur and oxygen. They occur naturally in small amounts in some foods and are also produced by the body. For food use, they are typically manufactured synthetically.

Sulfites are added to foods to prevent browning and to preserve freshness by inhibiting the growth of mold and bacteria. They are commonly found in dried fruits, processed potatoes, wine, and some baked goods.

Sulfites are approved by the FDA as a food additive and are generally recognized as safe (GRAS) for many uses. However, some individuals are sensitive to sulfites and may experience allergic-type reactions, such as hives, swelling, or difficulty breathing. The FDA requires foods containing more than 10 parts per million of sulfites to declare them on the label. JECFA and EFSA have evaluated sulfites and established acceptable daily intakes.