Learn Glossary preservative

Sodium Sulfite(E221)

Level 4Significant concernsIn Winter's Dictionary

Sodium Sulfite is a preservative — Antiseptic, preservative, antioxidant, browning inhibitor

What it does

Antiseptic, preservative, antioxidant, browning inhibitor

Where you'll see it

wine, distilled beverages, frozen apples, dried fruit, fruit pie mix, peeled potatoes

What the research says

Sulfites can trigger asthma attacks; cause stomach irritation, nausea, diarrhea, skin rash; destroys thiamine

Regulatory status

  • US FDA: ASP
  • EU: approved
  • Notes: Sulfite class; allergen

Sources

  • A Consumer's Dictionary of Food Additives (Winter): foods and drinks containing sulfites may release sulfur dioxide; can trigger an asthmatic attack