Citrus preservation technology

I. Warehouse storage and construction: The inventory is built within 30 meters from the digester, with underground or semi-subterranean type as the best. The storage volume is 30 cubic meters, and the area is 10-15 square meters. It is provided with 4 storeys, once for storage 3000- 5000 kilograms, with a 60 cm 60 cm skylight at the top. Fruit picking and fruit packing: When ripe oranges reach 80% to 90%, use sunny days and dew dry to cut fruit with scissors and gently pick lightly; choose non-injury, no pests and diseases, uniform fruit size, dry, cool and ventilated 1-2 days after the storage.
Storage: Clean and disinfect the interior of the warehouse before entering the warehouse, connect the gas pipe and the diffuser pipe, install the sealed storage, pay attention to the seal, leave the exhaust hole, and observe the hole.
Gas Transmission: Enter the desulphurized biogas one week after entering the warehouse for 20-60 minutes, and input 11-18 liters of biogas per cubic meter of storage capacity; the input of biogas may be less in the early stage of storage, and the input may be increased when the temperature increases. Biogas volume. Ventilation and dehumidification: The optimum humidity for citrus storage is 90%-98% at a temperature of 4°C-15°C; biogas is replenished every 3 days, and ventilation is performed when the temperature is too high. When the air changes, you can open the doors, skylights and exhaust pipe ventilation first, then close the doors, skylights and exhaust pipe, according to the standard input of fresh biogas; if the humidity is not enough, at the end of the ventilation, the amount of spraying the floor to the library Water.
Fruit turning: after one week of storage, the fruit is turned over 1 day before the biogas is input, and the fruit should be turned into fruit once in conjunction with the ventilation. When the fruit is turned, the position of the upper and lower fruits will be exchanged and the rotten fruit will be removed.
Delivery: Storage can generally be stored for 120 days or so, after storage.
Second, the bag storage first bag: the use of intact airtight plastic bags, the size of each bag Sheng 10 kilograms of citrus is appropriate.
Fruit picking: Citrus harvested and pre-treated and stored in a cool place for 2 days.
Bagging: Place the outlet of the biogas pipeline into the bottom of the plastic storage bag, and gently put the citrus in order. Each bag should not exceed 10 kg. After filling, turn on the switch and input the biogas until the odor of the marshes is smelled. Close the switch. Air pipe, and use plastic ropes to tie bag tightly to avoid air leakage.
Storage: Place a layer of rice straw or straw 5-8 cm thick on the inside of the room, lay the citrus bag on top or place it on the ground.
Management: One week after storage, it should be checked one by one to see if the plastic bag leaks, whether the inner layer is filled with water, and whether there is rotten fruit. If there is a leak, locate the leak and seal it with tape. If there is water, put in dry confetti or straw to absorb water, and remove it after the water droplets disappear. Found that bad fruit removed in a timely manner. After processing, enter biogas again.
Delivery: Bag storage can generally be kept fresh for about 90 days. The good fruit rate is over 95% and the weight loss rate is 1%-2%.
â—ŽIt is forbidden to smoke and light in the storage room.
â—Ž electric lighting, switches should be installed outdoors.
â—ŽBefore leaving the warehouse, ventilate for 1-2 days.
â—ŽBag storage should not be stacked in layers so as not to crush the fruit (check at least once a week and once every 20 days).
â—Ž During the storage period or after the storage is completed, the personnel must be adequately ventilated and tested for animals before entering the reservoir. The test method is to move the small animal into the reservoir and take it out after 5 minutes. According to the state of the animal, it is determined whether the personnel can enter safely (if the animal is healthy, it can be entered; otherwise, it should not be entered and further ventilated).

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