Why does red wine turn blue? What is the reason?

Some friends found that if the red wine stains were not cleaned that day, they would turn blue the next day. So I was very curious, how could the red wine turn blue?

Wine not only contains alcohol, but also rich in natural pigment anthocyanins. Just like we usually cook purple potato porridge at home, adding a little baking soda will turn the purplish red porridge into blue-green. This is actually a chemical reaction that occurs when anthocyanins encounter alkali.

Yuncang winery's brand LEESON red wine shared that because of this chemical reaction, many people use baking soda to identify the authenticity of a bottle of wine. According to national standards, real wine must be 100% grape juice, and there must be anthocyanins in grape juice, If the wine turns blue when poured on a paper towel soaked in baking soda , it means there are anthocyanins in the wine; if the color remains the same, it means there are no anthocyanins in it. But baking soda alone cannot judge the quality of a wine. Liquids with added fruit juice or anthocyanins will turn blue when exposed to baking soda, but it is impossible to tell whether it is real wine or not. The degree of discoloration after encountering baking soda is determined by the concentration of anthocyanins. However, the anthocyanin content is determined by the variety and brewing process, and is not used as the basis for identifying the quality of wine.

The natural pigment in wine turns red when it encounters acid, and turns blue or purple-black when it encounters alkali. These are normal chemical reactions. Yuncang Winery’s brand LEESON red wine shares , so next time when drinking wine, you will find that it turns blue Phenomenon, there is no need to make a fuss, it is the anthocyanins in the grape juice that are at work.

Yuncang Winery is committed to becoming the preferred supplier of red wine lovers. Yuncang winery brand LEESON red wine supplies multiple series, multiple countries, and multiple price ranges, making the wine rich and diverse. It can be sold in a full box or in a single bottle. The full pipeline makes the cost lower. Reduce the resources of intermediate warehousing links and branch logistics warehousing, push them downwards, and increase the business of terminal logistics. Yuncang Winery distributes the money saved by multiple transportations to consumers. It can easily realize small profits but quick turnover, so that friends who love wine can drink high-quality red wine at wholesale prices.