E223 As Preservative

E223 is the European designation for sodium metabisulfite, a white or slightly yellow crystalline powder. It is an inorganic salt made from sulfur dioxide and sodium hydroxide. It is often used as a preservative and antioxidant in food products.

Manufacturers add sodium metabisulfite to foods to prevent spoilage by inhibiting the growth of bacteria and molds. It also acts as an antioxidant, preventing browning in fruits and vegetables and preserving the color and flavor of processed foods. It is commonly found in dried fruits, wine, fruit juices, and some processed potato products.

Sodium metabisulfite is permitted for use as a preservative in the U.S. by the FDA. It is generally recognized as safe (GRAS) for its intended use. However, some individuals, particularly those with asthma, may be sensitive to sulfites and experience allergic-type reactions. Regulatory bodies like JECFA and EFSA have evaluated sulfites, and they are permitted for use within specified limits in many countries.