Astringin

Astringin is a stilbenoid, the 3-β-D-glucoside of piceatannol. It can be found in the bark of Picea sitchensis or Picea abies (Norway spruce). Astringin is a stilbenoid, the 3-β-D-glucoside of piceatannol. It can be found in the bark of Picea sitchensis or Picea abies (Norway spruce). It is also present in Vitis vinifera cells cultures and in wine.