Many people think of wine as an acidic food because of its sour taste. In fact, wine is an alkaline food. In nutritional medicine, the definition of so-called acidic food and alkaline food is not determined by the acidity and alkalinity of the taste, but by the amount of acidic and alkaline substances produced after the food is digested, absorbed, and metabolized by the human body. to define. Wine grapes are sour and astringent, but after a series of brewing processes, they become a charming wine in the cup. Wine is not only a solution of water and alcohol, but also rich in content. It contains glucose, fructose, sucrose, sugar, tartaric acid, oxalic acid, citric acid, malic acid and other substances. It is also rich in minerals. Importantly, it is metabolized by the human body. It will then become alkaline, so wine is a weakly alkaline food.