E 224 Potassium metabisulphite

What is E 224?

E 224 is the E number of Potassium metabisulphite. Sulphite salt used mainly in winemaking for sulphiting.

What is E 224 used for?

E 224 belongs to the group "Other additives" and is used as preservative, antioxidant.

• Preservative: Preservatives prolong shelf life by protecting food against microorganisms.
• Antioxidant: Antioxidants protect against oxidation, which for example turns fats rancid or changes colours.

Which foods may contain E 224?

According to the European Commission's database, E 224 may be used in 41 food categories and subcategories, each only in specific products and usually with maximum levels. The categories come from these areas:

• Fruit and vegetables
• Confectionery
• Cereals and cereal products
• Bakery wares
• Meat
• Fish and fisheries products
• Sugars, syrups, honey and table-top sweeteners
• Salts, spices, soups, sauces, salads and protein products
• Beverages
• Ready-to-eat savouries and snacks

Is E 224 vegan?

Usually yes: the substance is normally made from plant, mineral or synthetic raw materials or with microorganisms. In individual cases, only the manufacturer or a vegan label can give certainty.

Is E 224 linked to genetic engineering?

No typical link to genetic engineering is known for this substance: it is not usually obtained from plants for which GM varieties exist, nor produced by fermentation.

How does E 224 appear on the label?

In the list of ingredients, the substance appears with its function, followed by the E number or the name, for example "Preservative: E 224" or "Preservative: Potassium metabisulphite".

• Allergen labelling: sulphur dioxide and sulphites must be emphasised as an allergen from 10 mg per kg or litre (Annex II to Regulation (EU) No 1169/2011).