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Sweet Potatoes

Recommended

Conventional cooling

Dynamic Cooling

Pre-cooling

De-greening

Ripening

General Tips for Sweet Potatoes

Storage temperatureRelative Humidity (RH)DurationPre-coolingSensitivity to ethyleneEthylene ProductionControlled 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.