-
Anonymous users2024-01-23This is due to the presence of phenolic substances in potatoes, which maintain their respiration. When the potatoes are peeled, the phenols in the plant cells are oxidized with the air under the action of phenols, producing a large amount of quinones. The new quinones can cause plant cells to turn brown rapidly, a change called enzymatic browning of food.
So apples will change color after peeling and leaving them for a while. This is also the case with potatoes but also some vegetables. This browning affects the appearance of the food, reducing the nutrient content of the outer layer, but it is still edible.
If the potato is left for a long time after peeling, and the oxidative decomposition of plant cells in the air is intensified, the nutrients in the outer layer of the potato are decomposed more, and the pectin substances are further decomposed into pectic acid and methanol under the action of enzymes, making the flesh loose, wet, discolored, tasteless, and even rotten and deteriorated. So, it is best to eat it immediately after peeling. An easy way to control the discoloration of potatoes is to immediately soak the peeled potatoes in cold, boiled water, sugar water, or lightly salted water to isolate them from the air to prevent oxidation of phenols in plant cells.
However, from the point of view of preserving the nutrients in potatoes, peeled potatoes should not be soaked for too long. It will not be harmful to the body, so don't worry.
Nothing to do with the newly renovated kitchen!
-
Anonymous users2024-01-22Peeling and blackening potatoes is a normal oxidation reaction.
Regarding the process of renovation and decoration of the kitchen and toilet, we do this: at the beginning, the original demolition of the original demolition wall and the original tiles, ceilings, original kitchen utensils, lamps, if there are special requirements of the wall is also to be removed. Then the lines of the water and electricity should be adjusted, and then the ground should be waterproofed. >>>More
The main thing in the smell of the toilet is the smell of formaldehyde, which is particularly harmful to the human body. Clear way: put a pot of "ivy" flowers, orange peel (more is better). It'll be gone in a few days.
Want to create a U-shaped kitchen that has character and meets your needs, but don't know where to start? >>>More
Precautions that cannot be ignored in kitchen renovation 1: Unsuitable pipes need to be renovated The internal structure of the old kitchen is relatively complex. In addition to asking the cabinet manufacturer to measure the kitchen, but also to see whether the original position of the various pipes is suitable, if it is not suitable and needs to be changed, a drawing will be issued to the decoration company, and the construction team will carry out the necessary transformation according to the drawings. >>>More
First of all, a low-noise fan should be chosen. A volute-free rear fan box has the characteristics of high reliability and stable pressure, which is more suitable for kitchen fume exhaust; The fan has no volute, and there will be no interference noise between the impeller and the worm tongue, and it has the characteristics of low noise; The fan box has the function of sound insulation and noise reduction, and the noise of the fan box itself is very low. Although the noise of the multi-wing air conditioner fan box is low, it is not suitable for kitchen fume exhaust. >>>More