Peaches
Recommended
Conventional cooling
Dynamic Cooling
Pre-cooling
De-greening
Ripening
General Tips for Peaches
| Storage temperature | Relative Humidity (RH) | Duration | Pre-cooling | Sensitivity to ethylene | Ethylene Production | Controlled Atmosphere |
|---|---|---|---|---|---|---|
|
Storage temperature:
-0,2° - 0,2° C
|
Relative Humidity (RH):
85%-92%
|
Duration:
2-6 weeks
|
Pre-cooling:
Air cooling
|
Sensitivity to ethylene:
Moderate
|
Ethylene Production:
Very high
|
Controlled Atmosphere:
Recommended
|
Storage Temperature: Recommended storage temperature is −0.2 °C. |
High Humidity: Use an air-cooler with a low air–product temperature differential (ΔT). |
Storage Duration: Recommended period is 2 – 6 weeks. |
Ozone: Install an ozone-generation unit to ensure effective microbial control. |
Ethylene Removal: The use of an ethylene burner is recommended. |
Ventilation: A digitally controlled ventilation system should be installed for consistent air exchange. |
Air Circulation: Use inverter-driven fans with digital control to maintain uniform airflow throughout the chamber 24/7. |
Controlled Atmosphere: Recommended gas composition: 2 % – 5 % O₂ and 3 % – 6 % CO₂. Controlled Atmosphere delays ripening and maintains flesh firmness for up to 75 days. |
Dynamic Pre-Cooling: Detailed study of temperature absorption time and airspeed ensures uniform core-to-surface cooling across the entire load. |
Dynamic Cooling: Continuously monitors multiple control points and automatically adjusts environmental parameters across the entire chamber for optimal uniformity. |
- Rapid pre-cooling to 1 °C (core temperature) and maintenance of the cold chain throughout all distribution stages.
- Keep storage temperatures uniformly below zero within the chamber.
- Dynamic Cooling application is essential for high-quality preservation.
- Use low-velocity air movement to achieve gentle and even cooling.
- Maintain medium CO₂ levels to support quality retention — concentrations above 20 % cause off-flavors and surface browning.
- Remove ethylene continuously to prevent premature ripening.
- During harvest, firmness should exceed 3.5 kg force, measured with an 8 mm penetrometer tip.
- Sugar content at harvest should be below 9 °Brix, measured with optical refractometers.
- Disinfect cold-storage chambers before use.
- Avoid external odors, as peaches easily absorb environmental smells.