Red wine belongs to the three-low (low alcohol, low sugar, low calorie) and three-rich (rich in amino acids, rich in vitamins, rich in inorganic salts) wines. Most of the nutrients in red wine come from grape juice, and the ethanol contained comes from juice fermentation.
First, the chemical composition of wine
Wine generally contains 10% -16% or so of alcohol, containing ethanol from juice fermentation. Its chemical composition comes from grape juice. There are more than 250 kinds of components that have been analyzed.
1. A variety of sugars: glucose, fructose, garrison sugar, gum, mucus, all for the human body essential sugar substances, can beauty skin.
2. Organic acids: tartaric acid, malic acid, succinic acid, citric acid, etc., all to maintain the body's acid-base balance of substances, can help digestion.
3. Inorganic salts: red wine contains potassium oxide, magnesium oxide, the proportion of wine is equivalent to the proportion of potassium and magnesium in human muscle, which can reduce melanin in the skin.
4. Nitrogen-containing substances: the average nitrogen content of red wine is about 0.05% -0.027%, and the wine contains 1 gram of protein/liter and 18 kinds of amino acids, which can promote the body's metabolism.
5. Vitamins and biotin-like substances: red wine contains thiamin, riboflavin, niacin, vitamin B6, vitamin B12, pantothenic acid, folic acid, biotin, vitamin C and so on. Vitamin-like substances such as inositol, p-aminobenzoic acid and choline, as well as bioflavonoids, etc., to supplement the human body needs a variety of original elements.
6. Alcohols: Alcohol content of 70 ml / liter - 180 ml / liter. There is a small amount of heterohydric alcohol oil, phenylethanol and so on. Diols, polyols, esters, acetal, etc. These substances form the red wine aroma, flavor substances, have the effect of softening blood vessels.
7. Tannins and pigments: red wine tannins than white wine, slightly bitter taste. Red wine contains 0.4g/l-0.11g/l of pigment, from the point of view of skin care, of course, is to drink red wine, the effect is better.