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Knowledge of eating persimmons and matters needing attention.
There are thousands of varieties of persimmon * * * in this world, and they can be divided into astringent persimmon and sweet persimmon according to whether they can naturally remove astringency before ripening on trees. Among them, astringent persimmons (most of the persimmons listed in China belong to this category) must be artificially astringent before they can be eaten. The material basis for causing astringency of astringent persimmons is tannic acid (also known as tannic acid). Persimmon contains a lot of carbohydrates, 1.8 grams per 1 grams of persimmon, mainly sucrose, glucose and fructose, which is why everyone thinks persimmon is very sweet. Persimmon has few other nutrients, only a small amount of fat, protein, calcium, phosphorus, iron and vitamin C, etc. In addition, persimmon is rich in pectin, which is a kind of water-soluble dietary fiber, which has a good laxative effect, and has a good effect on correcting constipation and maintaining the normal growth of intestinal flora.

Chinese medicine believes that persimmon is sweet and astringent, cold in nature, and has the functions of clearing heat and removing dryness, moistening lung and resolving phlegm, softening and hardening, quenching thirst and promoting fluid production, strengthening spleen, treating dysentery and stopping bleeding, and can relieve constipation, hemorrhoid pain or bleeding, dry cough, sore throat and hypertension. Therefore, persimmon is a natural health food for patients with chronic bronchitis, hypertension, arteriosclerosis and internal and external hemorrhoids. If persimmon leaves are decocted or boiled as tea, it can also promote metabolism, lower blood pressure, increase coronary blood flow and relieve cough and phlegm.

Although eating persimmons has many benefits, there are several points to be reminded:

Persimmons can't be eaten on an empty stomach because persimmons contain more tannins and pectin, which will form lumps of different sizes under the action of gastric acid on an empty stomach. If these lumps can't reach the small intestine through pylorus, they will stay in the stomach and form stomach persimmon stones. Small stomach persimmon stones are like apricot stones at first, but they will accumulate more and more. If the stomach persimmon stone cannot be discharged naturally, it will cause digestive tract obstruction, severe pain in the upper abdomen, vomiting, and even hematemesis. The stomach persimmon stone as big as a fist was found during surgery. If the stomach has a "bottom", the formation of stomach persimmon stone can be avoided.

You can't eat persimmon skin. Some people think that chewing persimmon skin while eating persimmon is more delicious than eating persimmon alone. In fact, this way of eating is unscientific. Because most of the tannic acid in persimmon is concentrated in the skin, it is impossible to remove all the tannic acid in persimmon when it is astringent. If it is eaten together with the skin, it is easier to form stomach persimmon stone, especially when the astringency removal process is not perfect, its skin contains more tannic acid.

Don't eat with high-protein crabs, fish, shrimps and other foods. In traditional Chinese medicine, crabs and persimmons are cold foods, so they can't be eaten together. From the point of view of modern medicine, crabs, fish and shrimps with high protein are easily solidified into pieces under the action of tannic acid, that is, stomach persimmon stone.

Persimmons should not be eaten by diabetics because they contain 1.8% sugars, mostly simple disaccharides and monosaccharides (such as sucrose, fructose and glucose), so they are easily absorbed after eating, which makes blood sugar rise. For diabetics, especially those with poor blood sugar control are more harmful.

Enough is enough. Tannic acid in persimmon can form compounds that cannot be absorbed by human body with minerals such as calcium, zinc, magnesium and iron in food, so these nutrients cannot be utilized. Therefore, eating more persimmon can easily lead to the lack of these minerals. Because persimmon contains more sugar, people feel more full when they eat persimmon than when they eat the same number of apples and pears, which will affect their appetite and reduce the intake of dinner. It is generally believed that it is advisable to eat no more than 2 grams of persimmons every time when you are not on an empty stomach.

gargling persimmons after eating contain high sugar content and pectin. After eating persimmons, some of them are always left in the mouth, especially in the teeth. Adding weakly acidic tannic acid can easily erode teeth and form dental caries. Therefore, it is advisable to drink a few mouthfuls of water after eating persimmons or gargle in time.

There are some attractive and red persimmons on the market now, but they are not sweet at all. They are probably ripened with hormones. Because it's hard to tell the difference from the outside, I suggest you buy one and try it before you decide whether you need to buy more.