So2
What is So2?
Sulfur dioxide (SO2) is a gas that occurs naturally in small amounts but is often produced industrially. It is commonly used as a preservative and antioxidant in foods and beverages.
Is So2 vegan?
So2 is not animal-derived. Products that contain it can still include other animal-derived ingredients, so check the full ingredient list.
Is So2 a major allergen?
Sulfites, including sulfur dioxide, are not among the FDA's 9 major food allergens.
What is So2 used for?
Sulfur dioxide is added to foods to prevent spoilage by inhibiting the growth of bacteria, yeasts, and molds.
Is So2 safe?
Sulfur dioxide is generally recognized as safe (GRAS) by the FDA when used according to good manufacturing practices.
Why it's used
Sulfur dioxide is added to foods to prevent spoilage by inhibiting the growth of bacteria, yeasts, and molds. It also helps preserve the color and flavor of certain foods, especially dried fruits and vegetables, and is used in winemaking to prevent oxidation.
Health notes
Sulfur dioxide is generally recognized as safe (GRAS) by the FDA when used according to good manufacturing practices. However, it can cause allergic-type reactions in some individuals, particularly those with asthma. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) and the European Food Safety Authority (EFSA) have evaluated sulfur dioxide and its salts, establishing acceptable daily intake levels. Some studies suggest a link between sulfite sensitivity and respiratory issues, while others find no significant association at typical consumption levels.
Allergen info
Sulfites, including sulfur dioxide, are not among the FDA's 9 major food allergens. However, individuals with sulfite sensitivity may experience adverse reactions.
Foods that contain So2
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