After buying yam back, peel it and cut it into pieces, then pack it in plastic bags according to the consumption each time, and immediately put it in the upper layer of the refrigerator for quick freezing to meet the requirements of short-term storage at home.

Second, long-term preservation.

1, room temperature ventilation preservation method

If the home is well ventilated, it can be stored in a ventilated place at room temperature. Generally, it can be preserved for 3 ~ 6 months by this method. When storing, don't put yam in plastic bags and newspapers. It's better to let them spread out.

2, rice wine soaking method

This method is not commonly used, because it will destroy the taste and quality of yam. The practice is to break the yam, then soak the incision in rice wine, blow dry with a hair dryer to promote wound healing, and finally wrap it in a napkin and put it in a cool place for several months.

3. Refrigeration method of refrigerator

Chinese yam can be stored at 1 ~ 4℃ for about 3 years. So the yam bought in summer can be stored in the refrigerator immediately. When storing yam in cold storage, it should be separated from fruit to avoid yam deterioration due to ethylene release from fruit.

Extended data:

Storage and processing of yam

Yam, also known as Dioscorea opposita, Dioscorea opposita, Dioscorea opposita, Dioscorea opposita and Dioscorea opposita, is a kind of herbal medicine recorded in Chinese Materia Medica, and its medicinal source is the dried rhizome of Dioscorea opposita.

Dioscorea tubers are cold-resistant, and can be stored in situ if necessary, and the harvest can be postponed until the first half of March of the following year. It can also be stored in an earthen kiln, and yam and sand are alternately stored in layers. Finally, cover the soil into a ridge shape and cover it with straw to prevent rainwater from invading. The temperature in the cellar 10- 15℃ can be stored until April-May of the following year.

In addition to fresh yam, fresh yam has been processed into tops or smooth strips for export in recent years. Gyroscope is made by soaking yam in water, scraping off the skin, fumigating with sulfur and drying in the sun. The harvested rhizomes should be processed in time, otherwise the processing will be difficult and the drying rate will decrease.

Wash the roots and scrape off the skin to make them white. If there are small black spots and residual spots on the root nodes, they can be scraped off with a knife and smoked with sulfur immediately after scraping. About 0.25 kg of sulfur is used for every 50 kg of fresh yam, and the smoking time is about 8- 10 hour. When the water goes out and the yam becomes soft, you can take it out and expose it to the sun, or bake it in a curing barn. However, it should be noted that if the yam is too big, it can also be cut into 2-4 pieces vertically, which is easy to dry and will not be moldy.

When the epidermis of Dioscorea zingiberensis is slightly dry and hard, stop exposure or baking, then smoke with sulfur for 24 hours until the whole plant becomes soft, then take it out for exposure or baking, then pile it up until the epidermis is dry, and repeat this for 3-4 times until it is really dry. The method of making smooth strips is to soak the tops in water until soft, sprinkle with starch, grind, cut into 16- 18 cm yam strips, sprinkle with starch, grind and dry in the sun.

References:

Baidu Encyclopedia-Dioscorea