How long can purple sweet potatoes be kept

Although purple sweet potatoes are not as sweet as sweet potatoes, they contain more anthocyanins than ordinary sweet potatoes. So, how long can purple sweet potatoes be kept? In fact, generally speaking, if stored properly, purple sweet potatoes can be stored until the spring of the following year from the time they are harvested. However, I hope everyone can pay attention that if the storage temperature is high, it will easily cause purple sweet potatoes to sprout.

Method 1: Store in the refrigerator. The low temperature in the refrigerator can greatly extend the shelf life of purple sweet potatoes. Generally speaking, raw purple sweet potatoes can be stored in the refrigerator for up to several months.

If the purple sweet potato is cooked, it cannot be kept in the refrigerator for a long time, and the storage time generally cannot exceed 3 days. Therefore, it is best to eat the purple sweet potato immediately after it is cooked.

Method 2: Make potato chips. Cut off the inedible part of the purple sweet potato, put it in a pressure cooker and cook it. After it cools down, take it out, peel it, slice it, and place it in a well-ventilated and sunny place to dry.

Method three: sun drying. If there is too much moisture on the raw purple sweet potatoes, be sure to wipe it off and place them in a sunny place to remove excess moisture. Too much moisture will cause the purple sweet potatoes to rot and other problems. After removing excess moisture, store it in a cool and ventilated place.

Method 4: Cellar storage method. Soak the purple sweet potatoes with 1000 times diluted 70% thiophanate and disinfect the cellar, then put the purple sweet potatoes into the cellar. The cellar temperature is maintained between 10 and 15 degrees. If you need to preserve a lot of purple sweet potatoes, you can use this method.

The selenium and iron in purple sweet potatoes are necessary elements for the human body to resist fatigue, anti-aging, and blood tonic. Selenium, in particular, is known as the "king of anti-cancer" and is easily absorbed by the human body. It can remain in the serum, repair the myocardium, enhance the body's immunity, eliminate free radicals in the body, inhibit the synthesis of DNA in cancer cells and the division and growth of cancer cells, and prevent the occurrence of gastric cancer, liver cancer and other cancers.

Purple sweet potatoes are rich in cellulose, which can increase stool volume, promote gastrointestinal motility, clear mucus, gas and decayed matter retained in the intestinal cavity, excrete toxic substances and carcinogens in stool, maintain smooth bowel movements, improve the digestive tract environment, and prevent the occurrence of gastrointestinal diseases. In addition to the nutrients of ordinary sweet potatoes, it also contains polysaccharides, flavonoids, and is rich in selenium and anthocyanins. It has certain functions in preventing hypertension, alleviating liver dysfunction, and anti-cancer.