Sulfites are sulfur-based compounds. These may occur naturally in foods. Sulfites are added to some foods, mostly to act as a preservative. Six sulfites are used in conjunction with food and drink :. Sodium sulfite, sodium bisulfite, sulfur dioxide, potassium bisulfite, sodium metabisulfite, and potassium metabisulfite
Since 1986, the Food and Drug Administration has banned the use of sulfites on fruits and vegetables that are intended to be consumed raw, and it has also mandated that foods contain sulfites show this on their labels.
Food and drinks containing sulphites
Food and drinks that contain sulfites include baked goods, horseradish, relish, canned clams, frozen shrimp, gelatins, jams, jelly, grape juice, apple cider, maraschino cherries, sauerkraut, instant mashed potatoes, trail mixes, dried soup mixes and wine. Although sulfites are produced by yeast naturally during the fermentation process, it is also added to wines as a preservative.
Sulfites can cause allergic reactions in an estimated one percent of people, according to the FDA. Between five and ten percent of asthma sufferers are allergic to sulfites. These reactions may possibly be fatal in a similar percentage of cases.