The cold storage method and temperature for storing sweet potatoes are as follows:
1.Cleaning and screening: Sweet potatoes are cleaned before being put into storage to remove dirt and impurities from the surface. At the same time, sweet potatoes with pests and diseases or damage should be removed.
2.Sorting and packaging: Sweet potatoes are sorted according to variety, size, and quality, and packaged in a proper way to prevent moisture loss and external contamination.
3.Control relative humidity: When storing sweet potatoes in cold storage, a suitable relative humidity should be maintained, generally between 80-90%. Humidity can be maintained using a humidity control device or water spray.
4.Control temperature: The best storage temperature for sweet potatoes is 12-15 degrees Celsius. Too low a temperature can cause sweet potato starch to convert to sugar and a sticky texture, while too high a temperature can cause sweet potatoes to become soft and moldy.
5.Ventilation and circulation: The cold store should have a good ventilation and circulation system to keep the air fresh and evenly distributed, which helps to prolong the storage period and maintain the quality of sweet potatoes.
6.Regular inspection: Regularly check the storage conditions of sweet potatoes, including temperature, humidity and the condition of sweet potatoes, etc., and adjust and deal with them in time if abnormalities are found.
In summary, cold storage methods for storing sweet potatoes include cleaning and screening, sorting and packaging, controlling relative humidity and temperature, ventilation and circulation, and regular inspections. The temperature should be controlled in the range of 12-15 degrees Celsius to ensure the quality and taste of sweet potatoes.