The first situation: Although dried sweet potatoes have been exposed to the sun for a long time, they still contain a lot of water, including glucose and fructose. When they are dried in the sun, the water gradually evaporates, and the contents of the pulp The glucose and fructose penetrate into the epidermis to form a white color.
The second situation: Fructose tastes very sweet and easily absorbs moisture. When it penetrates the surface of the dried sweet potato, it grabs the moisture in the air and sticks to the skin, similar to the syrup on the outside of the candied fruit. A white substance is formed.
The third situation: The sweetness of glucose is not as sweet as that of fructose, but it is not easy to capture the moisture in the air. When it penetrates into the skin, it becomes a layer of white powder, which is just right for adhesion. The fructose is wrapped in it, making the whole dried sweet potato dry.
Extended information:
1. Characteristics of dried sweet potatoes:
1. The weather is getting colder and colder. Dried sweet potatoes will not change due to the weather temperature in a short period of time. If your relationship is affected, especially if moldy changes occur, don't worry.
2. The same dried sweet potatoes dried at different times will have slightly different colors.
4. The taste of dried sweet potatoes placed in the refrigerator will not be affected in any way but actually tastes better.
3. If it is exposed to hoarfrost, the longer it is left outside, the more hoarfrost will occur.
4. White frost is actually the natural sugar found in sweet potatoes (similar to the white frost on persimmons).
5. If you have any concerns or buyers who don’t like to eat white frost, please store the dried sweet potatoes in the refrigerator as soon as possible after receiving them if you can’t finish them all at once.
2. How to make dried sweet potatoes (dried sweet potatoes):
1. Wash the sweet potatoes and cut them into thin slices with a sharp knife or peeler
< p>2. Soak the cut sweet potato slices in cold water for 10 minutes, changing the water twice to remove the starch in the sweet potato3. Use kitchen towels to absorb the water from the soaked sweet potato slices and place them before baking In the plate
4. Heat and melt the butter, brush a thin layer on the surface of the sweet potato slices
5. Sprinkle a little white sugar and put it in a preheated oven at 170 degrees. medium, bake for about 20 minutes until crisp, take out and let cool
Baidu Encyclopedia-Dried Sweet Potato