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Salicylic acid

salicylic acid (GB)
This aromatic carboxylic acid (o-hydroxybenzoic acid) of a phenolic OH group is found in the form of its methyl ester in essential oils and as a plant hormone in the leaves, flowers and roots of various plants, including grapevines. The name is derived from the fact that it used to be obtained mainly from the bark of various willows (species Salix). It is the starting material for the analgesic and anti-inflammatory acetylsalicylic acid (Aspirin), as well as for food colourings and fragrances. The brand name of the well known drug Aspirin is derived from the also common name Spiric Acid. The acid has antifouling and anti-fermentation properties. However, it is prohibited as a preservative (also in winemaking) as it also contains skin-dissolving substances. The free and esterified acid contained in the wine has a positive, preventive effect against cardiovascular diseases; see under Health.

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