Crispy persimmons are very astringent when they are first picked. After picking, they need artificial astringency removal, and the substance used is tannic acid. If the skin is eaten together, the tannic acid content in persimmon skin is higher than that in persimmon meat, which is easy to cause stomach persimmon stones, stomach discomfort, vomiting and nausea, and even bleeding. Therefore, crisp persimmons should not be eaten, and the skin should be peeled off when eating.

When eating crispy persimmon, you must peel it. Some people think that when eating persimmon, chewing persimmon skin is more delicious than eating persimmon pulp, but in fact, this way of eating is unscientific, because the tannic acid in persimmon skin is higher than that in persimmon meat. If eaten together, it is easier to form stomach persimmon stones.

The sugar content in crispy persimmons is particularly high, and most of them are easily absorbed by the human body, such as glucose, fructose, sucrose, etc., which will lead to an increase in blood sugar, so diabetic patients are forbidden to eat crispy persimmons.

Extended data:

1, most of the tannic acid in persimmon is concentrated in the skin. When persimmon is astringent, it is impossible to completely remove tannic acid. If you eat the skin together, it is easier to form stomach persimmon stone, especially in the case of imperfect astringency removal process, the skin contains more tannic acid, and the persimmon skin contains the most tannic acid. When persimmon is astringent, it is impossible to remove all tannic acid, so don't eat persimmon skin.

2. Don't eat persimmon on an empty stomach. There is more stomach acid on an empty stomach. Tannic acid, pectin and cellulose in persimmon will condense together in the stomach to form stomach persimmon stone after encountering gastric acid, which will damage the gastric mucosa and oppress the stomach wall, resulting in abdominal distension, abdominal pain, nausea and vomiting.

Oranges can be eaten if they are left soft for a long time. Softening is because the water in the orange evaporates, which will make the sugar content per unit orange higher and taste sweeter. Similarly, crispy persimmon seeds can be eaten when they become soft, and they will be sweeter, as long as they are not sour. Generally speaking, as long as it is not bad, it will not be bad.

References:

Baidu encyclopedia-persimmon