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
History of French wine come out with a ranking of the region's wine estates. The 1855 classification of Bordeaux would become one of the world's most famous rankings of wine estates. Wine was becoming a cornerstone of the French economy and a source of national pride as French wine enjoyed international recognition as the benchmark standards for the wine world. A series of events brought this golden age of prosperity to an end. In the 19th century, scientific interest in collecting botanical species led to the exchange of many specimens from around the world—with the unintended consequence of introducing new diseases and aliments to