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Related Experiment Videos

Stilbene compounds: from the grapevine to wine.

L Bavaresco1, C Fregoni, E Cantù

  • 1Institute of Viticulture, Università Cattolica S. Cuore, Piacenza, Italy.

Drugs Under Experimental and Clinical Research
|June 17, 1999
PubMed
Summary

Grapevine stilbenes, like resveratrol, are key to plant defense and may contribute to red wine

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Area of Science:

  • Plant Physiology
  • Viticulture
  • Enology

Background:

  • Stilbenes, including resveratrol, are naturally occurring compounds in grapevines (Vitis vinifera L.).
  • These compounds function as phytoalexins, aiding grape resistance against pathogens.
  • Resveratrol in red wine has been linked to cardiovascular health benefits.

Purpose of the Study:

  • To review grapevine stilbene physiology and its relationship with resveratrol levels in wine.
  • To investigate constitutive and induced stilbene accumulation in grapevines.
  • To explore factors influencing resveratrol content in grapes and wine.

Main Methods:

  • Literature review and data compilation from the Viticulture Institute, Catholic University of Piacenza.
  • Analysis of constitutive stilbene content in grapevine woody organs.
  • Investigation of stilbene accumulation in grape berries infected by Botrytis cinerea.

Main Results:

  • Constitutive stilbene levels in grapevine roots, canes, and stems were documented.
  • The potential role of cluster stems as a resveratrol source for wine was examined.
  • Stilbene accumulation in response to grey mould infection was observed.
  • Environmental influences on grape and wine resveratrol concentrations were discussed.
  • A novel, unidentified hydroxystilbene was detected in wine.

Conclusions:

  • Stilbenes play a significant role in grapevine's natural defense mechanisms.
  • Grape cluster stems may contribute to wine resveratrol content.
  • Environmental factors and pathogen presence influence stilbene levels in grapes and wine.
  • Further research is needed to identify the newly discovered hydroxystilbene and its properties.

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