How do you keep sweet potatoes longer? How sweet potatoes are stored for a long time

Sweet potatoes are a very popular delicacy. Li Shizhen.

It is known as the "longevity food". It is rich in calcium, iron, phosphorus, as well as a variety of vitamins and carbohydrates.

Eating sweet potatoes regularly can enhance disease resistance, improve immune function, prevent constipation, and promote fat metabolism to play a leading role.

Every year after the frost, there will be a large number of sweet potatoes on the market, fresh and cheap, and when buying sweet potatoes in the market, the bulk and bagged ** are not the same, the bagged ** is relatively cheap, for housewives living at home.

In other words, if there is a advantage, it must be taken, and the economic account is particularly accurate. Therefore, generally when we buy sweet potatoes, we will buy dozens of catties, store them, and keep them to eat slowly in winter, roasted or steamed, which is very good.

Many friends like to eat sweet potatoes, but they don't dare to buy more, for fear that the sweet potatoes will rot or sprout after a long time. Our whole family is very fond of eating sweet potatoes, and my mother-in-law will plant two or three hundred sweet potatoes every year, harvest seven or eight hundred catties of sweet potatoes, store them, and eat them until May of the next year. I will share with you that I have used the old method of storing sweet potatoes for decades, and with this method of storage, the sweeter the sweet potatoes are, and they will not rot or sprout for half a year.

Step 1: Don't store sweet potatoes directly from the market, whether you're buying them in the market or growing them yourself. Before storing sweet potatoes, pick out sweet potatoes with scars on the surface. Put the sweet potatoes with the surface intact and place in the sun.

Dry the water on the surface of the sweet potatoes for two days, so that when you store them, the sweet potatoes will not be easy to rot.

Step 2: Prepare some cardboard boxes, choose cardboard boxes with thick paper and vents next to them. Put the dried sweet potatoes into the carton, and pay attention to leaving a certain gap between each sweet potato when placing it, so as to prevent the sweet potatoes from being damaged during storage, and the soup will flow to other sweet potatoes, and the surrounding sweet potatoes will be infected and rotten.

Step 3: After placing a layer of sweet potatoes, sprinkle with a layer of not very dry sand, and the sand soil should completely cover the sweet potatoes. Then, spread a layer of newspaper, place another layer of sweet potatoes, sprinkle in a layer of sand, and so on layer by layer, filling the box with sweet potatoes.

In this way, it can not only absorb moisture, ensure that the humidity in the carton is appropriate, but also avoid sweet potatoes rubbing against each other and breaking the skin.

1. Carton preservation method, first of all, you need to select the preserved sweet potatoes, and pick out the sweet potatoes that have been moldy, rotten or sprouted. After that, put the selected sweet potatoes into a cardboard box, then put a few apples, and then cover the carton without sealing, so that the sweet potatoes can be stored for a long time, so that the sweet potatoes will be sweeter and sweeter.

2. Freezing method, rinse the sweet potatoes with water, then cook the sweet potatoes and let them cool, wrap the sweet potatoes with plastic wrap after the skin of the sweet potatoes dries, and then put them in the freezer of the refrigerator, so that the sweet potatoes can be stored for several months, generally the sweeter they are.

3. Newspaper preservation method, first of all, you need to prepare some newspapers, and then wrap each sweet potato with newspaper and put it in a cool and dry place, but pay attention to air circulation, which can prevent sweet potatoes from rotting or germinating, which is conducive to the preservation of sweet potatoes.

Sweet potatoes must be kept in a dry environment, the temperature can not be too high or too low, if the environment is humid, sweet potatoes will be easier to germinate, but if the temperature is too cold, sweet potatoes are easy to freeze to death.

It can be placed in the cellar, and the terrain of the cellar should be high and convex, which can be sheltered from rain and moisture, and the sun is sufficient.

1. Accompany the dismantling of indoor storage: sweet potatoes are afraid of cold, and when the temperature is too low, they will be frozen, forming a hard heart, steaming and cooking; If the temperature is too high, it will sprout again, and the room temperature can be controlled at about 15. Sweet potatoes are moist and can easily cause germs to attack and cause rot, so they can be stored in a breathable wooden box.

2. Well cellar storage: choose a place with high potential for reeds and jujubes, solid soil quality and low groundwater level, and dig a wellbore downward, generally with a diameter of about 1 meter and a wellbore depth of 5-6 meters. The size of the storage room can be determined according to the amount of storage.

In the storage room, 10-15 cm thick dry sand should be lined with sweet potatoes. Sweet potatoes can only be filled to 70% in order to leave room for ventilation, otherwise they will rot aggravated by humidity and heat.

3. Dry and store the slices: slice the sweet potatoes and put them on the mill or in a sunny, dry and ventilated place to dry, and be careful not to suffer from rain and snow. After drying, store it in a dry place indoors and soak it in water before eating.

The storage method of sweet potatoes is as follows:

1. Carton storage method.

Find an empty carton, put a layer of paper towel on the bottom before putting the sweet potatoes to avoid moisture, then put the sweet potatoes in it, and then spread another layer of paper towels on top of the sweet potatoes after putting them, and finally seal them in a dry and ventilated place.

2. Newspaper wrapping method.

Wrap the sweet potatoes in newspaper one by one and pack them all in a bag.

3. Cellar preservation method.

Dig a cellar by hand and place the sweet potatoes in the cellar for preservation.

4. Sun-dried preservation method.

Sweet potato slices can be stored for a long time by drying them in the sun.

Precautions for the storage of sweet potatoes

Sweet potatoes can be exposed to the sun for a period of time before storage, about 4 days, in order to reduce the moisture of the sweet potato itself, increase the sugar content, and also make the damaged parts of the sweet potato repair, not easy to spoil.

Do not go into the water before storing sweet potatoes, the water is easy to spoil, dry them after unearthing or after buying them, and then store them directly. It is best not to have damaged places in stored sweet potatoes, which are easy to breed bacteria and lead to spoilage, so you can pick them before storing them and pick out the bad ones.

Sweet potatoes can also be stored in the cellar, see a small house on the ground, surrounded by a seal, can be around the house, establish a circle of fire, in order to have the effect of drying. At the same time, ventilation channels should also be established around the perimeter of the cellar to allow for timely ventilation.

When we store sweet potatoes, we must choose those whole, no traumatic sweet potatoes, sweet potatoes on the surface of the sweet potatoes can also not be removed, which can play a protective role in the sweet potatoes, and appropriately reduce the loss of water and nutrients in the sweet potatoes.

Although sweet potatoes are more resistant to storage, but when preserving, we should also pay attention to temperature and humidity, generally speaking, sweet potatoes like temperature and do not like freezing, according to the data, the best temperature to preserve sweet potatoes is about 0 to 15 degrees, if the temperature is too low, sweet potatoes are easy to frostbite and rot.

1. Cellar preservation.

This is the most commonly used storage method in rural areas. The best storage temperature of sweet potatoes is about 15 degrees, and if the temperature is too high, sweet potatoes are easy to germinate, and if the temperature is too low, it is easy to cause freezing damage and reduce the quality.

Therefore, the temperature of the rural cellar is exactly around 10 to 15 degrees, so it is very suitable for storing sweet potatoes. After the sweet potato is harvested, after drying for 3 5 days, the farmer growers should be packaged with bran husk or corn husk, a layer of bran, a layer of sweet potatoes, and sweet potatoes in the same layer, which should be separated by bran husks. Or spread a layer of dried fine sand under the cellar, and stack the sweet potatoes in layers, taking care not to have too many layers, and leave room for ventilation.

2. Indoor storage.

Law. Sweet potatoes are afraid of cold, and when the temperature is too low, they will be frozen, forming a hard core, which is not cooked or boiled; If the temperature is too high, it will sprout again, and it is best to control the room temperature at about 15. Sweet potatoes are damp and can easily cause germs to attack and cause rot, so it is best to store them in a breathable wooden box.

3. Slice drying and storage method.

Slice the sweet potatoes and dry them on the house or in a sunny, dry and ventilated place. Be careful not to be exposed to rain or snow. After drying, store it in a dry place indoors and soak it in water before eating.

Cooked sweet potatoes generally last for a day, but they can last up to three days if they are kept in the refrigerator. If sliced, take to dry. It can be stored for a long time.