Sulphites

Term for the salts and esters of sulphurous acid. However, the term is also used colloquially for sulphur or sulphur dioxide in general. In winemaking, the sulphur compounds potassium pyrosulphite and metabisulphite are used as antioxidants. According to EU regulations, since 2005 all wines with more than 10 mg/l of sulphur must be labelled "contains sulphites" or "contains sulphur dioxide".

However, this value can hardly be undercut and can therefore be found on almost every label. The labelling obligation takes into account hypersensitivity to sulphites. Consuming even small amounts of sulphites can cause intolerance reactions such as asthma, allergic reactions of the immune system, hives and low blood pressure. The maximum permissible limits, which vary depending on the type of wine, are specified under sulphurous acid.

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