Sweet Potatoes
Recommended
Conventional cooling
Dynamic Cooling
Pre-cooling
De-greening
Ripening
General Tips for Sweet Potatoes
| Storage temperature | Relative Humidity (RH) | Duration | Pre-cooling | Sensitivity to ethylene | Ethylene Production | Controlled Atmosphere |
|---|---|---|---|---|---|---|
|
Storage temperature:
13° - 14° C
|
Relative Humidity (RH):
90%-95%
|
Duration:
6-10 months
|
Pre-cooling:
Not required
|
Sensitivity to ethylene:
Medium
|
Ethylene Production:
Very low
|
Controlled Atmosphere:
Not recommended
|
Dynamic Cooling: Ensures precise and uniform temperature and humidity regulation through continuous multi-point monitoring across the entire cold room volume, maintaining ideal conditions 24/7. Dynamic Cooling extends storage life by 15–20% compared to standard storage conditions. |
CO₂ Management: Requires specialized study and installation of dedicated systems to control CO₂ concentration produced by respiration. |
Ventilation: Properly designed and digitally controlled ventilation is essential for removing respiration gases and maintaining stable conditions throughout the chamber. |
IMPORTANT TIPS
- Dynamic Cooling is essential for long-term preservation of sweet potatoes.
- Ensure proper ventilation and use ethylene absorbers where necessary.
- Store away from ethylene-emitting products to prevent quality degradation.
- Avoid temperatures below 10°C — sweet potatoes are highly susceptible to chilling injury. Symptoms include internal browning, decay, shrinkage, and overall loss of quality.
- Manage CO₂ levels carefully: concentrations above 100,000 ppm negatively affect product quality.
- Cure sweet potatoes before storage to promote cork formation on the skin and reduce postharvest damage.
- Keep stored roots away from light exposure to prevent greening and surface damage.