Sodium metabisulphite is a preservative that inhibits growth of various fungi and other pests and helps preserve content of some vitamins and phytochemicals. It can, however, degrade some vitamins.

Health considerations

Sodium metabisulphite is metabolized easily by the liver to harmless products. In a study of rats fed sodium metabisulphite daily for months, no negative effects were seen.

Keep in mind

Individuals sensitive to sulphites should avoid sodium metabisulphite.

May be found in

Preserved vegetables, fruit juice, bakery products, alcoholic beverages, potato products, dried fruit


Food Additives & Contaminants
Letters in Applied Microbiology
Molecular Nutrition & Food Research
Wiley Online Library

Alternative Spellings and Names

Sodium metabisulfite, sodium disulphite, E224

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