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Pak Choi

Recommended

Conventional cooling

Dynamic Cooling

Pre-cooling

De-greening

Ripening

General Tips for Pak Choi

Storage temperatureRelative Humidity (RH)DurationPre-coolingSensitivity to ethyleneEthylene ProductionControlled Atmosphere
Storage temperature: -0,1° – 0,5° C
Relative Humidity (RH): 92%-94%
Duration: 2-3 weeks
Pre-cooling: Air cooling
Sensitivity to ethylene: High
Ethylene Production: Very low
Controlled Atmosphere: Not recommended

Dynamic Pre-Cooling (Low-Pressure / Wet-Bulb Chambers): Specialized systems for unpackaged vegetables immediately after harvest. They control humidity and create a low-pressure environment that enables rapid and uniform temperature reduction.

Dynamic Pre-Cooling (High-Suction Capacity Chambers): Designed for precise airflow and absorption timing, ensuring even cooling throughout the product mass.

Natural Airflow Cold Room – Mist Atmosphere: Advanced storage rooms where natural airflow combined with fine misting maintains ideal microclimate conditions for humidity-sensitive products.


Low-Airflow Cold Room with Continuous Water Circulation: Highly specialized chamber type for products that require extremely high humidity and minimal air movement (<25 air exchanges/hour). Humidity is maintained through continuous water circulation.

IMPORTANT TIPS
  • Pre-cool rapidly using Dynamic Pre-Coolers with high suction capacity and maintain the cold chain across all logistics stages.
  • Keep humidity high during harvest and handling to prevent dehydration.
  • Remove ethylene through proper ventilation or with the use of ethylene absorbers.
  • Install ozone generators to suppress fungal growth and ensure product hygiene.
  • Use modified atmosphere bags to slow respiration and extend freshness.
  • Maintain medium CO₂ levels to help preserve texture, color, and quality.
  • Avoid storing with ethylene-producing products such as apples, pears, or tomatoes.