Learn Glossary preservative

Sodium Metabisulfite(E223)

Level 4Significant concernsIn Winter's Dictionary

Sodium Metabisulfite is a preservative — Bacterial inhibitor and antibrowning additive

What it does

Bacterial inhibitor and antibrowning additive

Where you'll see it

wine, ale, beer, sugar, syrups, frozen apples, dried fruits

What the research says

Sulfites can trigger asthma attacks and other reactions in sulfite-sensitive people

Regulatory status

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

Sources

  • A Consumer's Dictionary of Food Additives (Winter): a bacterial inhibitor in wine, ale, beer; antifermentative in sugar; antibrowning additive