Sodium Metabisulfite As Preservative And Turmeric

Sodium metabisulfite is a white or slightly yellow crystalline powder. It is a salt of sulfurous acid, made by reacting sulfur dioxide with sodium carbonate or sodium hydroxide. It is commonly 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 and preserving color in dried fruits, wines, and processed potatoes. It is often found in canned and bottled goods, dried fruits, and some processed meats.

Sodium metabisulfite is permitted for use as a food additive by the FDA. It is generally recognized as safe (GRAS) when used according to good manufacturing practices. Some individuals, particularly those with asthma, may be sensitive to sulfites and experience allergic-type reactions. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated sulfites and established an acceptable daily intake.