How to preserve purple sweet potato for a long time

There are roughly two storage methods for long-term preservation of purple sweet potatoes, namely, high-temperature storage and low-temperature storage.

1. The high temperature storage method is to heat the purple sweet potato to 35-38℃ for 2-3 days to kill the black spot and soft rot of purple sweet potato. Then cool to 10- 14℃ for storage.

2. Using low-temperature storage method, the purple potato should be treated in time after harvest and put into the cellar in time. After the purple potato enters the cellar, the initial temperature in the cellar is kept below 65438 05℃ and above 65438 00℃ by various methods. The temperature in the cellar is lower than 15℃, which can inhibit the activity of bacteria, and higher than 10℃, which can avoid freezing injury and achieve the purpose of safe storage.

Extended data:

Selection method of purple sweet potato

1, don't choose round, choose long, give priority to spindle-shaped purple potato, which tastes better.

2, the surface looks smooth, there are dark spots on the skin, and it tastes strange when cooked. Rotten purple potatoes are poisonous. Don't pick them.

3. There is no musty smell, and the moldy purple potato contains ketotoxin and cannot be eaten.

4. Don't buy purple potatoes with black or brown spots on the skin.

5. Germinated purple potato is not as toxic as potato, but it tastes bad, so try not to choose it.

References:

Baidu encyclopedia-purple potato