What is metabisulfit?

Metabisulfite refers to a salt or an ester of the sulfurous acid, which is used as a preservative, antioxidant, and disinfectant. It is widely used in the food and beverage industry for preserving and extending the shelf life of foods, especially those that are prone to spoilage. Metabisulfite is also used in the wine industry for preventing the growth of harmful bacteria and oxidation of wine. Additionally, it can be used in various industrial processes and as a bleaching agent in laundry washing. However, some people are allergic to sulfites, particularly those with asthma, and may experience adverse reactions such as breathing difficulties, skin rash, or digestive problems. Therefore, the use of metabisulfite in food and other products is regulated by government agencies to limit the intake of sulfites by consumers.