Enzymes And Sodium Metabisulfite

Enzymes are proteins that speed up chemical reactions. They can be produced by living organisms, such as plants, animals, or microbes. Sodium metabisulfite is a white or yellowish crystalline powder that is a salt of sulfurous acid. It is often produced by reacting sulfur dioxide with a solution of sodium carbonate or sodium hydroxide.

Enzymes are used in baking to improve dough handling and bread texture. Sodium metabisulfite is used as a preservative and antioxidant in foods like dried fruits, wines, and processed potatoes. It helps prevent browning and spoilage. These ingredients are often found in baked goods and some processed foods.

Sodium metabisulfite is generally recognized as safe (GRAS) by the FDA when used according to good manufacturing practices. It can cause allergic reactions in some individuals, particularly those with asthma. The FDA monitors its use. JECFA has evaluated sulfites and established an acceptable daily intake. Enzymes used in food processing are typically considered safe and are subject to FDA oversight.