In fact, no good and healthy skin grapes

Autumn is the season of fruit, but in my view, a wide variety of fruits, the most beautiful person than grapes. Grapes not only look cute, but extremely sweet. Whether in Xinjiang sweet seedless grapes, or Muscat grape aroma, are the fruit in my mind Need aesthetic.



The reason why grapes and sweet, because it is far more than the sugar content of apple-pear taoxing of Class A common temperate fruits, up to nearly 20%. Because the sugar high, so grape juice is sticky. It is rich in potassium and magnesium, which are relatively high in fruits of iron, there is a definite tonic effect.



However, these grapes are not subject to international attention, becoming the second largest fruit crops, the main reason. Today, it has great production, one of the main reasons is that used to make wine. Wine for its health value has been sought after by people of the world, and that health reasons, in fact, comes from grapes, mainly grape skin and grape seed polyphenols inside the health care component.



Known health effects of wine, a key ingredient, is one of the resveratrol. This substance has a strong anti-oxidant, anti-cancer, anti-cardiovascular diseases, anti-radiation, anti-inflammatory, antibacterial and other effects, but they are mainly found in grape skin and seeds, the pulp content of only a fraction of skin inside One of the few 1%.



Another special health ingredients in grape called polymeric procyanidins. The health effects of such substances has been more and more attention, including a high antioxidant activity, anti-cancer, anti-mutagenic, anti-radiation, prevention of cardiovascular disease, and promoting tissue repair and improve the skin and so on. The so-called grape seed extract because it is, and valuable. This substance is not relying on grapes pulp, because it only exists in the seeds.



Meanwhile, the skin and seeds also contain a lot of tannins and flavonoids, which have antioxidant health effects of wine is also part of the justification.



Guer, it was suggested that grapes can not be sputtered grape skin and seeds out with even the best eats, or thrown into the trash a pity. However, eating a grape skin and grape seed, is really able to get one of the baby?



Not necessarily the case

The grape skin and grape seed chew swallow the result of waves of only the tongue numb, feeling very uncomfortable, half-day all regain its strength. This is because it contains a lot of tannin, it solidified the tongue, mouth and esophagus the surface of the protein, resulting in a strong astringency. A certain extent, this substance is like persimmon tannin, like a large number of eaten some damage to the digestive tract.



To pay such a large price, one of the active ingredients will still be wearing off and the intestines and does not like drinking wine, as was easily absorbed.



It turned out that resveratrol contained in grape skin Ye Hao, Ye Hao polymeric procyanidins, which are difficult to dissolve in water. Resveratrol soluble in ether, chloroform, methanol, ethanol, acetone and so on. The grape seed among the polymeric procyanidins are soluble in methanol, acetone, ethanol and ethyl acetate. Therefore, it is often a mixture of ethanol and water to extract these components.



It is reported in the literature, resveratrol solubility in water at room temperature is very poor, but in 10% alcohol were (v / v) up to 40 mg per liter, which is already sufficient enough to resveratrol in grape skins to fully dissolve out; With the increase of alcohol content as well as the temperature increased, the solubility will continue to rise. Even with the CD-embedded and other methods for resveratrol dissolved in water, its bioavailability is not satisfactory.



This allows to understand why the amount of drinking red wine for health benefits. Alcohol is a mixture of ethanol and water, soaked in wine for some time, can effectively extract grape skin and seeds among the active ingredient, with much better results than the use of water to soak. Moreover, the wine itself has a certain anti-corrosion effect, you can soak a lot of days, the extraction of active substances quite well; while soaked in water for only a few hours to 10 hours a long time it may spoilage.



So, if you want access to grape skin and grape seed among the benefits of using teeth to chew with his tongue to stir, using saliva to extract, the effect is quite unsatisfactory. A better approach is homemade wine, want access to health care component of the friend, probably should try.



First to prepare a can of low-priced white wine, the Muscat grape and other dark-colored skin tear to large numbers thrown out; own sputtered grape seeds smashed with a hammer or a knife blade, but also threw to go. Cover lid foam 2 weeks time, often shaking. As time goes by, grape skin color faded, while the red color of the wine growing. At this time, the sediment filter out, or go to the top of the clear juice, grape skin, seeds become healthy wine. As the grapes are in the astringency of polyphenols, so the wine astringent taste of fat, just like wine, there will always be the same number of astringency. However, because the aroma of this wine is not wine, so the taste is slightly worse. If it is, and fruit juices, especially grape juice against the drink together, you can greatly improve the flavor