Wine color practice of saignée (exposing wine to red grape skins for only a short period of time in order to give it a lighter feel closer to that of white wine) or by blending a white wine with a red wine. The presence of a complex mixture of anthocyanins and procyanidins can increase the stability of color in wine. As it ages, the wine undergoes chemical autoxidation reactions involving acetaldehyde of its pigments molecules. The newly formed molecules are more stable to the effect of pH or sulfite bleaching. The new compounds include pyranoanthocyanins like vitisins (A and B), pinotins and
French wine displayed, common EU rules apply: The recognized wine producing areas in France are regulated by the Institut National des Appellations d'Origine – INAO in acronym. Every appellation in France is defined by INAO, in regards to the individual regions particular wine "character". If a wine fails to meet the INAO's strict criteria it is declassified into a lower appellation or even into Vin de Pays or Vin de Table. With the number of appellations in France too numerous to mention here, they are easily defined into one of the main wine producing regions listed below: Alsace is primarily a white-wine