1 Stacking and peeling method: It is a traditional walnut peeling method in China. The technical point is that the fruit should be transported to the outdoor cool place or indoors in time after harvesting, and should not be exposed to sunlight, and then piled at a thickness of about 50cm (too thick and perishable). If a layer of hay or dry leaves with a thickness of about 10 cm is added to the fruit heap, the temperature inside the heap can be increased, the fruit ripening can be promoted, and the speed of peeling can be accelerated. Generally stacking 3 to 5 days, when the peel from the shell or cracking of more than 50%, you can use the stick percussion peeling. For unpeeled people, they can be stacked for several more days until they are fully peeled. Do not blacken, or even rot, the husks during stacking so as not to infiltrate the husks into the shells to contaminate the kernels and reduce the quality and value of the nuts. 2 Pharmaceutical peeling method (not recommended for this method): Due to the long time of dehulling and dehulling by stacking and peeling, the work efficiency is low, and the pollution rate of the fruit is high, which has a great impact on the quality of nut products. Since the 1970s, some units have started trials. Ethephon ripening and peeling technology, the specific approach is: After the fruit is harvested, in the concentration of 0.3% to 0.5% ethephon soaked in about half a minute, then press the thickness of about 50cm piled in a cool place or room, at the temperature At a temperature of 30°C and a relative humidity of 80% to 95%, the peeling rate can be as high as 95% or more for about 5 days. It can be peeled off in about 2 days. The duration of ethephon ripening and the concentration of drug used are related to fruit maturity. The fruit has high maturity, low drug concentration, and short ripening period.
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