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Source
Not animal-derived
Allergen
No
Role in food
Sulfur dioxide and sulfites are used as preservatives in many foods. They prevent spoilage …
What it is
Sulfur dioxide (SO2) is a gas that occurs naturally in small amounts. It is often produced industrially by burning sulfur or by heating metal sulfides. In food, it is typically used in the form of sulfites, which are salts containing sulfur and oxygen.
Why it's used
Sulfur dioxide and sulfites are used as preservatives in many foods. They prevent spoilage by inhibiting the growth of bacteria, yeasts, and molds. They also act as antioxidants, preventing browning in fruits and vegetables and preserving the color of dried fruits.
Health notes
Sulfur dioxide and sulfites are generally recognized as safe (GRAS) by the FDA for use in food. However, some people are sensitive to sulfites and may experience allergic-type reactions, including asthma symptoms, hives, or digestive upset. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated sulfites and established an acceptable daily intake. Evidence regarding the link between sulfites and asthma symptoms is mixed, with some studies showing a clear association in sensitive individuals.
Allergen info
Not a major allergen. Sulfites are not derived from any of the 9 FDA major allergens. Gluten is not present.
Note:
This site presents label data from USDA FoodData Central for general information. It is not medical advice.
Check the package label; formulations change.