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Wine preservatives
Type
Additive
Colour
Purple/transparent colour
Flavour
Most are tasteless and a few, such as tannins, have a bitter taste
Related products
Food preservative
Wine preservatives are used to preserve the quality and shelf life of bottled wine without affecting its taste. Specifically, they are used to prevent oxidation and bacterial spoilage by inhibiting microbial activity.[1]
Wine contains natural preservatives such as tannin, sugar and alcohol,[2] and can be preserved through physical preservation methods, such as storage at an appropriate temperature.[3] However, bacterial growth is still possible, so chemical preservatives are added to most wines.[1][4] Typical chemical preservatives include sulfur dioxide and its related chemicals, such as sulfites.[2]
The use of preservatives in wine has been shown to cause health problems in some consumers.
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