What is the "white frost" on the surface of Chenpi Pu'er?

In general, people like to pick apples, oranges, peaches and other fruits like the surface is smooth and bright, and those dull, scarred, the surface is not smooth fruit is not very popular. However, for dried fruit products, this standard is not feasible. People prefer dried fruits such as dried persimmons, dried sweet potatoes, bayberry, raisins, etc. that are not so “bright” or even have “white frost” on the surface. The number of "white frosts" is used to judge the pros and cons of dried fruits, and dried persimmons and dried sweet potatoes with "blush" tend to be better sold. Some merchants try their best to create "white frosts" and even artificially manufacture them using the method of spreading starch." Hoarfrost."

The recent hot market of Chen Pipu, there are also many tea friends will surface the reaction of "white frost" situation, then this "white frost" is the same as the "white frost" on the dried fruit is the same? "Blush" How did it come about?

The "hoar cream" on the surface of dried fruit is usually called "fruit cream". It is a kind of sugary substance. It contains a lot of water in fresh fruit and also contains glucose, fructose, etc. When it is dried, the moisture gradually evaporates. Containing glucose and fructose form a "fruit cream" following the material that oozes out of the epidermis and becomes a white powder. “Fruit Cream” is an important criterion for judging the quality of dried fruit, and it also has rich nutritional value and efficacy. “Medicine Zhongxinxilu” has recorded: “The persimmon cream is white and put into the lungs. , Its Run can also be Zifei dry." Persimmon cream warm water service, can cure chronic bronchitis, dry cough, pharyngitis.

The "white cream" on the surface of the tangerine peel is actually similar to that of the "fruit cream" but slightly different. In the village of tangerine, the Xinhui "white cream" is called "cerebral crystal" and "juice crystal". "It is a crystal formed by the orange oil released after the orange peel is baked at a high temperature. There are many factors that contribute to the formation of "Orange crystals": First, only the green skin will have a "white frost" phenomenon. Usually, only oranges will bloom, because the amount of citrus oil in the oranges is high, and the amount of citrus oil is as follows. The content of the growing citrus oil will be gradually reduced to sugar; the second factor is the high-temperature process, the orange peel is formed after the high-temperature roasting of the citrus oil to form the crystallization, so it is called "the citrus oil crystal"; the third is the core production area. The orange fruit, the more oil packs on the mandarin peel, the more white frost it has. In the Xinhui area, the products made from orange tires and mandarin oranges are more popular.

What is the "white frost" on the surface of Chenpi Pu'er?

Therefore, the hoarfrost on the surface of tangerine peel is not caused by mildew, but is a white powdery substance formed by the crystals of citrus oil precipitated in the core area after the high temperature process.

In fact, there are many similar phenomena that are easily misunderstood in tea, like the “cold hind quarters” in black tea. At the beginning, people discovered that some black tea tea soups appeared turbid after lightening and were light brown or orange milky. He did not wait to see it for a long period of time until it was later confirmed that the "cold aftermath" was a unique phenomenon of high-quality black tea and was an important criterion for judging the quality of black tea.

To drink tea, you have to drink clearly and clearly. Tea is more than just drinking, it can bring more thoughts and more exploration is also excellent.

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