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Plum

Plums

Recommended

Conventional cooling

Dynamic Cooling

Pre-cooling

De-greening

Ripening

General Tips for Plums

Storage temperatureRelative Humidity (RH)DurationPre-coolingSensitivity to ethyleneEthylene ProductionControlled Atmosphere
Storage temperature: 0 °C
Relative Humidity (RH): 90% – 95%
Duration: 1 – 3 months
Pre-cooling: Air cooling
Sensitivity to ethylene: High
Ethylene Production: Low
Controlled Atmosphere: Not recommended

Storage Temperature: Recommended at 0 °C.

High Humidity: Use an air-cooler with minimal air–product temperature differential (ΔT).

Storage Duration: Suggested period is 1 – 3 months.

Controlled Atmosphere: Not recommended for small production volumes—uneconomical and low benefit.

Ozone: Install an ozone generator with appropriate ozone capacity to control microbial load.

Ventilation: A specialized, digitally-controlled ventilation system should be installed for the removal of ethylene and CO₂ from the chamber.

IMPORTANT TIPS
  • Low temperatures can cause surface damage or chilling injury.
  • Removal of ethylene from cold-rooms helps maintain product quality.
  • Maintaining moderate CO₂ levels supports longer term storage.
  • High CO₂ concentrations may lead to off-odours and quality decline.
  • Use 1–10 ppm ethylene at 24 °C–26 °C and RH 90%–95% for 2–3 days for de-greening, when applicable.
  • Disinfect cold-storage chambers prior to use.
  • Apply wax or edible polymer coatings to the fruit surface before storage.