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The one to the phenols (Polyphenols) counting substance was first isolated in 1963 in Knöterich plants (Polygonum cuspidatum) and identified. It is an antioxidant (antioxidant) and is found in plants or plant foods, especially peanuts, raspberries, mulberries and also grapes available. In the vine Resveratrol is in leaves and berry peels by Falsche mildew or Botrytis affected vines, as well as in stressful conditions like UV light formed as a defense reaction. It is, so to speak, a natural one fungicide, Such substances are also called phytoalexins, The resveratrol content is significantly higher in grapes or wines from cool and humid areas than in dry and warm areas. It is especially present in the shells of dark grapes over five times that of light ones.

Resveratrol crystals under microscope / grape with black berries

Resveratrol in wine can be a positive one health have beneficial effect by preventing platelet clumping. The phenomenon was discovered in the US in the 1980s and under the buzzword French paradox known worldwide in a short time. In the meantime, in vitro studies have provided evidence of a potential effectiveness against cancer cells. Resveratrol kills them by acting as an inhibitor on a protein important for the survival of cancer cells. Other studies have shown positive effects in autoimmune weaknesses, arteriosclerosis, arthritis and heart disease. Most recently, scientists from the University of Wisconsin have found through laboratory testing that age-related changes in cardiac function are attenuated, thereby slowing the aging process. The required amount of resveratrol is already reached by a daily glass of red wine. See also below anthocyanins,

Picture left: By Kuebi = Armin Kübelbeck - Own work, CC BY-SA 3.0 , Link

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