What is the white frost on persimmon cakes? Those white frost are actually glucose. In the fresh persimmon, there is a lot of water, also contains glucose and fructose, etc. when it is dried into persimmon, the water gradually evaporates, and the glucose and fructose in the pulp permeate into the epidermis. But the properties of these two kinds of sugars are different. Fructose is sweet and easy to absorb water. When it penetrates the surface of persimmon, it grasps the water in the air and adheres to the surface of persimmon, which is similar to syrup outside preserves. The sweet taste of glucose is not as good as fructose, but it is not easy to grasp the moisture in the air. When it penetrates the surface of persimmon, it becomes a layer of white powder, which just covers the adhered fructose, making the whole persimmon dry, so the white frost on the persimmon is actually the glucose powder.
The layer of persimmon cake is called persimmon cream, which can moisten dry, dissipate phlegm and stop cough. It can cure dry cough caused by lung heat. It is a sugar containing condensate exuded with the evaporation of pulp water when drying persimmon. The main ingredients are mannitol, glucose, fructose, sucrose, etc., which are light yellow or white. But now many people in the market use lime to fake persimmon cream. When you buy it, you should be careful. If you shake it, you can't buy it.
Eating taboo of persimmon
1. Persimmons should not be eaten as breakfast, because they should not be eaten on an empty stomach. Persimmons contain more tannic acid and pectin. When eaten on an empty stomach, they will form hard blocks of different sizes under the action of gastric acid. If these hard blocks cannot reach the small intestine, they will stay in the stomach and form persimmon stones. If the stomach persimmon stone can not be naturally discharged, then it will cause digestive tract obstruction, and there will be severe abdominal pain, vomiting, and even vomiting of blood and other symptoms!
2. Tannic acid in persimmon can form compounds with minerals such as calcium, zinc, magnesium and iron in food that can not be absorbed by human body, so that these nutrients can not be used, so eating more persimmon is easy to lead to the lack of these minerals and affect human health!
3. Because persimmons contain more sugar, people feel fuller when eating persimmons than when eating the same number of apples and pears, which will affect their appetite and reduce the intake of meals. So it's not recommended to eat too many persimmons!
4. Persimmon is high in sugar and pectin. After eating, some of them will stay in the mouth, especially in the teeth. With weak acid tannic acid, it is easy to erode the teeth and form caries. So drink more saliva after eating persimmon! Or rinse!