What is E224? Potassium Metabisulphite Explained
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E224 is Potassium Metabisulphite — a preservative (synthetic) used in bread and baked goods, wine and cider.
What is E224 (Potassium Metabisulphite)?
E224 is Potassium Metabisulphite, a food additive classified as a preservative that extend shelf life by preventing microbial growth. A preservative (synthetic) used in bread and baked goods, wine and cider. You'll find it in bread and baked goods, wine and cider, cured meats and many other packaged foods. Like every E-number, E224 has been authorised for use in food following an EFSA safety evaluation — though authorisation doesn't mean concern-free, as the safety section below explains.
Where is E224 found?
E224 (Potassium Metabisulphite) is found in bread and baked goods, wine and cider, cured meats, cheese, pickles and condiments, soft drinks.
- bread and baked goods
- wine and cider
- cured meats
- cheese
- pickles and condiments
- soft drinks
Is E224 safe?
E224 is authorised in the EU and UK but carries genuine concerns. E224 is a sulphite or sulphite-related additive — sulphites are declared allergens that can trigger asthma and respiratory reactions in sensitive people (estimated 5–10% of asthmatics). For most people consuming Potassium Metabisulphite in typical quantities, health effects are unlikely — but the caution flag reflects either active scientific debate, mandatory warning labels, allergen status, or conditions attached to its authorisation.
EFSA opinion: Potassium Metabisulphite — status Some concerns.
Check the calorie content of foods containing E224. If you’re pregnant, see our pregnancy food safety guide.
Cleaner alternatives to E224
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MORiSH Pork Chicharrónes
Prefer snacks with no artificial colours, preservatives or sweeteners? MORiSH pork chicharrónes are 79% protein, zero carbs and have a short, readable ingredient list.
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E224 FAQs
What is E224 in food?
E224 is Potassium Metabisulphite — a preservative (synthetic) used in bread and baked goods, wine and cider.
Is E224 safe to eat?
E224 is authorised in the EU and UK but carries genuine concerns. E224 is a sulphite or sulphite-related additive — sulphites are declared allergens that can trigger asthma and respiratory reactions i
Is E224 vegan?
E224 (Potassium Metabisulphite) is vegan. It is derived from synthetic, with no animal involvement in standard food production.
Is E224 halal?
E224 (Potassium Metabisulphite) is halal. It is derived from synthetic, which involves no haram sources.
Related Preservatives additives
Also check: safe for cats? · safe for dogs? · calorie checker · medication interactions
Data: Open Food Facts (ODbL) · EFSA