Eat grapes instead of skins and seeds

Grape seeds and skins contain many substances that are good for human body, but it is not good for health not to spit out the seeds when eating grapes Grapes are not only lovely in appearance, but also very sweet Its sugar content is far more than apple, pear, peach, apricot and other ordinary temperate fruits, up to nearly 20% However, these are not the main reasons why grapes are valued One of the main reasons it has so much production today is because it's used to make wine Wine is sought after by people all over the world for its health value The main reason for this health is the polyphenol health ingredients in grape skin and grape seeds Resveratrol in grape has strong anti-oxidation, anti-cancer, anti cardiovascular disease, anti radiation, anti-inflammatory, bacteriostasis and other functions, but it mainly exists in grape skin and seeds, the content of pulp is only a fraction to a few hundred percent of the skin Another special health ingredient in grapes is polymerized procyanidins More and more attention has been paid to the health effects of these substances, including high antioxidant activity, anti-cancer, anti mutation, anti radiation, cardiovascular disease prevention, tissue repair and skin improvement The so-called grape seed extract is valuable because of it This substance is not obtainable by eating grape pulp, because it only exists in seeds At the same time, there are also a lot of tannins and flavonoids in the skin and seed, which have antioxidant effect and are part of the reason of wine health effect Therefore, it has been proposed that grape skin should not be vomited when eating grapes It is better to eat the seeds together, or it will be a pity to throw them into the garbage can Is that true? The result of chewing the grape skin and seeds is that the tongue is numb and uncomfortable This is because it contains a lot of tannins, which can coagulate the protein on the surface of tongue, mouth and esophagus and produce strong astringency To some extent, the substance is like the tannins in persimmons, which damage the digestive tract when eaten in large quantities Even so, the active ingredients will still pass through the intestines, and can not be easily absorbed like drinking wine It turns out that resveratrol and polymerized proanthocyanidins in grape skin are difficult to dissolve in water Resveratrol is easily soluble in ether, chloroform, methanol, ethanol, acetone, etc However, the polymerized proanthocyanidins in grape seeds are easily soluble in methanol, acetone, ethanol and ethyl acetate Therefore, the mixture of ethanol and water is often used to extract these components In this way, we can understand why moderate consumption of red wine may be good for health But eat grape seed skin but "beg for help".