Káliummetabiszulfit

Káliummetabiszulfit, also known as potassium metabisulfite, is a chemical compound with the formula K2S2O5. It is a white crystalline powder that is soluble in water. Káliummetabiszulfit is commonly used as a preservative and antioxidant in food and beverages. It functions by inhibiting the growth of microorganisms and preventing the oxidation of certain components. In winemaking, it is used to sterilize equipment, prevent spoilage, and aid in the aging process. It can also be found in dried fruits, processed meats, and some processed vegetables.

Beyond its food applications, káliummetabiszulfit has industrial uses. It is employed in the photographic industry as a component of developing solutions. It also serves as a bleaching agent in textiles and paper production. In medicine, it can be found in some pharmaceutical preparations, though its use is less common.

Káliummetabiszulfit can release sulfur dioxide gas, which is an irritant. Individuals with sulfite sensitivities, such as asthmatics, may experience adverse reactions to foods or products containing sulfites. Regulatory bodies in many countries set limits on the amount of sulfites that can be added to food products to ensure consumer safety. The European Union has specific regulations regarding its use and labeling.