Sulphites
Sulphur dioxide (SO2) and Sulphites at concentrations of more than 10 mg/kg or 10 mg/litre are labelled as ‘SO2’. Sulphites include sodium sulphite, sodium bisulphite, potassium bisulphite and potassium metasulphite (E220-228).
They are used as a preservative in many foods.
Sulphites can trigger asthma attacks.
Sulphites can be found in the following:
- Wine, beer and carbonated soft drinks
- Salads, fruits like pre-packed apricots, prepared vegetables
- Meat products like sausages and beef burgers