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 of Ancient Rome, lead was used in regions such as Poitou to help sweeten and preserve some of their wines leading to various ailments that collectively were known as the "Poitou colic". By the end of the 17th century, most Poitou winemakers had stopped using lead in their wine production. The Dutch also promoted the plantings of many white wine varieties that were in fashion through Europe. In regions like Muscadet, in the Loire Valley, the Dutch encouraged the planting of Melon de Bourgogne which produced more reliable harvest than the region's red wine varieties. The practice of blending different