What is the crystal stone on the stopper of the red wine?
For Wine, Wine produced crystal stone is not accidental, but because produced in a particular environment in the wine crystals, either white or red Wine Wine are likely to produce this substance, even through the clean and clear liquor wine may also occur in sediment - Wine crystal stone. The shape of a wine crystal has no definite pattern, and sometimes a little sticky, usually attached to the bottom of the bottle, the shoulder of the bottle, or at the bottom of the cork for a long time
Grape fruit contains a variety of ingredients, juice, fructose, gelatin, pigment, acid, phenol and other substances, including an acid - tartaric acid contained in the acid, which is the source of the main component of the Wine formation of tartar crystal. The grape wine brewing, tartaric acid still exists in the Wine inside, and have not been turned into another form of composition, some of the ingredients in the acid will be changed into another form of acid, such as malic acid is converted into lactic acid in grape.
Many breweries to understand the situation, so in Wine before bottling, will be the removal of tartaric acid by temperature control equipment, but there is still a small amount of tartaric acid retention in the liquor, once Wine in suitable environment, tartaric acid will begin to polymerize slowly accumulated into crystalline or mass.
The appearance of the Wine white crystal stone, it looks just like a white sugar, red Wine crystal stone, showing a purple crystal coagulation shaped body, there is no perceptible acidity, the tartaric acid crystals, it is completely harmless. But strictly speaking, there will be a very slight acidity, even if the wine tasting veteran, it is difficult to detect the crystallization of the acid generated after condensation.
