Reducing sulfites are compounds that contain sulfur and oxygen and have reducing properties. They are commonly used in the food industry as preservatives and antioxidants. Reducing sulfites can help prevent the growth of bacteria and fungi, as well as protect foods from spoilage caused by oxidation.

Some examples of reducing sulfites include:

  1. Sulfur dioxide (SO2): A colorless gas used as a preservative in food and beverages, especially in the wine industry.
  2. Sodium bisulfite (NaHSO3): A solid compound used as a preservative in food and beverages, as well as in the paper and photographic industries.
  3. Sodium metabisulfite (Na2S2O5): A white powder used as a preservative and antioxidant in food and beverages, as well as in the textile and paper industry.

    Although reducing sulfites are useful in food preservation, some people may be sensitive or allergic to them. In these cases, they may experience symptoms such as difficulty breathing, hives, nausea and abdominal pain. For this reason, it is important that food manufacturers clearly indicate on labels whether their products contain sulfites.