Sweet potato is a rhizome plant that we often eat. Sweet potato has relatively high nutritional value. It can be used for cooking or as a staple food. In recent years, with the improvement of people's living standards, More and more people are becoming aware of the nutritional value of sweet potatoes. Eating more sweet potatoes on a daily basis not only has the effect of losing weight, but also has a good effect on cardiovascular health. In addition, it also has certain anti-cancer effects. After purchasing sweet potatoes, Many people are concerned about preservation methods. In fact, there are many preservation methods. As a family, you can preserve them indoors, but you must be careful not to put them in the refrigerator. Putting them in the refrigerator will aggravate rot. If it can be stored in a well or cellar, this is the best method and will last the longest.

1. Indoor storage

Sweet potatoes are afraid of cold. When the temperature is too low, they will freeze and form a hard core. They will not be steamed or boiled well; if the temperature is too high, , and sprouts will form. It is best to control the room temperature at around 15℃. If sweet potatoes are damp, they can easily be invaded by pathogens and cause rot. It is best to store them in a breathable wooden box.

2. Well cellar storage:

Choose a place with high terrain, solid soil, and low groundwater level, and dig a wellbore downward, usually about 1 meter in diameter and 5 to 6 meters deep. rice. The size of the storage room can be determined according to the amount of storage. The storage room should be padded with 10 to 15 centimeters of dry sand, and sweet potatoes should be placed on it. Sweet potatoes can only be filled 70% full to allow room for ventilation, otherwise moisture and heat will aggravate rot.

3. Slice and dry storage method

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

Sweet potatoes are longevity food

Sweet potatoes are rich in nutrients. According to measurements, each kilogram of sweet potatoes contains 290 grams of sugar, 23 grams of protein, 5 grams of crude fiber, 2 grams of fat, and also contains Multivitamins and minerals. The vitamin content is equivalent to that of fruits such as tangerines and tangerines, especially yellow sweet potatoes, which have a carotene content of 52 mg per 100 grams.

Sweet potatoes can provide a large amount of heat energy to the human body. 1 kilogram of sweet potatoes can produce 5317 kilojoules of heat, while 1 kilogram of white flour or rice can only produce 14779 kilojoules of heat. What’s even more amazing is that the protein contained in sweet potatoes has a supplementary effect on the protein in rice and noodles, and can significantly supplement the lack of vitamin C in flour, calcium in rice, and the lack of carotene in both. Eating sweet potatoes mixed with rice and white flour can increase the nutritional value of the staple food and prolong life.