How long can potatoes sit after they have been peeled

Potatoes are a lot of people love to eat food, potatoes are common in all seasons, potatoes have high nutritional value, can delay aging, have beauty and beauty benefits, the storage of potatoes is very important, potatoes should be peeled when they are made, peeled potatoes will turn black after a while, many people are worried that black potatoes can not be eaten, it will be possible to be poisoned, so they throw it away, how long can potatoes be put after peeling? Let's take a look.

One. How long do potatoes last after peeling and what causes potatoes to turn black after peeling?

1.Potatoes contain a substance called cyanin, which turns black when peeled off and exposed to the air to oxidize with oxygen.

2.Potato seeds contain an organic compound, tannic acid, which reacts with heavy metal knives and steel wool balls to produce ferric tannin or tanninate, which turns black.

3.After peeling, wrap it in plastic wrap and put it in the refrigerator, or soak it in water, and it can be stored for 1-2 days.

4.Put the peeled potatoes in water and add a few spoons of salt to effectively keep the potatoes from black and prolong the storage time of the potatoes.

5.After peeling the potatoes, put them in water and add a few drops of cooking vinegar to reduce the activity of enzymes in the potatoes and prolong the storage time.

2. Potatoes and tomatoes are mutually reinforcing.

Potatoes produce a large amount of hydrochloric acid in the gastrointestinal tract after passing through people's digestive systems. Tomatoes will produce precipitation under this acidic condition, these precipitation can not be absorbed by the human body because they are insoluble in water, and if they are eaten together, they will affect digestion, resulting in poor appetite or indigestion, so in order to avoid the combination of the two, we must remember that the two can not be eaten together.

3. Potatoes and bananas are mutually reinforcing.

Generally speaking, bananas are fruits that can improve skin tone and make the body healthier because they can promote gastrointestinal peristalsis and ensure the health of the digestive system. However, when potatoes and bananas are eaten together, the effect is not so good, but because of the effect of related ingredients, it will cause freckles on the face, so women who love beauty should pay special attention to it, and do not ruin their beautiful appearance because they do not understand the principle of mutual restraint.

Fourth, potatoes and eggs are mutually reinforcing.

The viscous protein in eggs itself is a very good substance, and if it interacts with trypsin in potatoes, it will lead to the breakdown of protein, which will make our body unable to better absorb protein, hindering the supplement of nutrients, so generally speaking, we do not eat potatoes and eggs together, and eating them separately can play a better role.

After peeling the potatoes, they can be refrigerated in the refrigerator and added with water for a day or two.

1. After peeling the potatoes, use plastic wrap.

After wrapping, put it in the refrigerator and can be stored for 2-3 days.

2. Potatoes soaked in water can be stored for up to 1 day. Peeled potatoes should be eaten as soon as possible to avoid the loss of nutrients contained in potatoes with the increase of time, which is not conducive to human health after eating.

3. How to store peeled potatoes:

1) You can put the peeled potatoes into the water and soak them fully to avoid contact between the potatoes and the oxygen in the air, and avoid the potatoes from oxidizing and turning black.

2) You can add an appropriate amount of edible white vinegar to the water of soaking potatoes to avoid oxidation and blackening of potatoes.

3) Peeled potatoes can be wrapped in plastic wrap and then stored in the refrigerator to effectively prevent the potatoes from oxidizing and turning black.

Peeled potatoes can still be stored until the next day if they are stored properly. After the potatoes are peeled, they are stored in the refrigerator compartment and can be stored until the next day. If you don't have a refrigerator at home, you can soak the potatoes in water and keep them at a low room temperature, so that they can be stored until the next day.

After peeling the potatoes, put them in water and add a few spoonfuls of salt, which can delay the oxidation of the potatoes and turn black. If there is no salt at home, you can choose to use edible vinegar instead, and the effect is similar.

Potatoes should be refrigerated at low temperature, not placed at high temperature, and unpeeled potatoes purchased at home also need to be stored at low temperature, and at the same time, the potatoes should be kept dry to prevent potatoes from rotting.

Putting the potatoes in a bag with an apple will properly inhibit the sprouting of potatoes and will also prevent them from drying out, rotting and sprouting. Although potatoes are suitable for low temperature storage, this food is also more afraid of cold, so in winter, you need to put them in a cardboard box and stay away from cold places.

If the potatoes you buy back are green-skinned, most of these potatoes are immature and are not recommended to eat. If the area of the potatoes is relatively green and there are many sprouted parts, it is not recommended to eat them.

There are two ways to store peeled potatoes:

1. Immersion method. Soak the peeled potatoes in cold water to isolate them from the oxygen in the air.

2. Acid addition method. Phenol oxidase is most active at pH 6-7 and decreases when pH is less than 3. Therefore, adding acid vinegar to food to reduce the pH value can inhibit the activity of enzymes and slow down the rate of discoloration.

After 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. Quinones can cause the brown of potatoes or lotus roots, resulting in darkening of the color.

After a long time, the oxidative decomposition of plant cells in the air is intensified, the nutrients in the outer layer are decomposed more, and the pectin substances are further decomposed into pectin acid and methanol under the action of enzymes, so that the potatoes or lotus roots become tasteful, deteriorated, and rotten until toxic substances are produced.

Extended information: The skin of potatoes should not be thick, the thinner the better, because the potato skin is rich in nutrients. After the potatoes are peeled, if they are not used for a while, they can be put in cold water and a few drops of vinegar can be dropped into the water to make the potatoes white.

Freshly harvested potato alkaloids rise from 20 80 mg/kg to 75 114 mg after some storage. The alkaloid content of sprouted or moldy potatoes will increase further.

This toxic compound is higher in potato skins, so be sure to peel them when eating, especially peeling off those that have turned green. In addition, sprouted potatoes are more poisonous, so be sure to dig out the sprouts and sprout roots when eating, and soak them in clean water, and stew them over high heat.

After peeling the potatoes: You can put the peeled potatoes in cold water to prevent them from coming into contact with the air, so that they will not change color. However, the time of putting it in the water should not be too long, about a day or so, and the potatoes are easy to spoil if they are left for too long.

After peeling the potatoes, they can be placed in a container and immersed in water. Store in the refrigerator. The color does not change until the second day.

1. Soak in cold water, the water must flood the potatoes, and put them in the freezer or refrigerator if possible.

2. It can be slightly fried to make the surface slightly yellow.

3. Brush or dip in oil to temporarily form an oil layer on the surface of the potato.