Sodium Metabisulfite is a reducing agent used in dough. It is used frequently in cookie and cracker production. It is also used as a preservative for baked goods, dried fruit and jams due to its antioxidant capacity.
It is extensively used as a food preservative and disinfectant. Sodium metabisulfite is commonly used as a food preservative for dried foods like potato chips, raisins and apples, as well as fruit concentrate juices Puramio Good Foor Product :)