Wax apples are tropical fruits with thin skins and high respiration rates, making them extremely prone to dehydration, shriveling, and rotting at room temperature. When considering wax apples cold storage, cold storage effectively slows down aging and extends shelf life.
1. Pre-storage treatment is crucial
Harvest on sunny mornings after the dew has dried, and avoid rainy days. Handle the fruit gently during harvesting to prevent damage to the skin. Afterward, sort and grade the fruit, removing damaged, diseased, and overripe fruit, and store them according to quality to prevent cross-contamination of spoiled fruit. Pre-cool wax apples within 24 hours of harvesting to quickly dissipate residual heat from the field, slow down respiration, and reduce the probability of later rotting. In fact, prioritizing pre-cooling maximizes wax apples cold storage benefits.
2. Core parameters for wax apples cold storage
Control the temperature in a standard cold storage facility between 12-15°C, and do not let it fall below 8°C. Low temperatures can easily cause chilling injury, resulting in mealy flesh and brown spots on the peel. Maintain the relative humidity inside the storage at 90%–95%. If the humidity is insufficient, sprinkle water on the ground or use a humidifier to supplement moisture and reduce water and weight loss from the fruit. Under these conditions, the storage environment keeps wax apples fresh for 25–30 days. Proper packaging and humidity control are both essential for effective wax apples cold storage. Packaging should use perforated cardboard boxes lined with perforated preservation bags. Do not completely seal the bags to prevent water accumulation and fruit rot.
3. Stacking fruit in the warehouse
The stacks should be 20 cm away from the walls and at least 1.5 meters away from the air cooler. Ventilation gaps should be left between stacks to ensure even air circulation. Avoid stacking excessively high or heavy loads, as this can damage the fruit on the lower layers. Regularly ventilate the warehouse to remove ethylene gas promptly; ethylene adsorbents can also be placed to slow ripening. Regularly inspect the fruit during storage and remove any spoiled fruit immediately. If using a controlled atmosphere cold storage facility with 3-5% oxygen and 5-7% carbon dioxide, the preservation effect will be even better. Additionally, wax apples cold storage methods should be tailored to the specific needs of this delicate fruit.
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