2. Store walnuts at home. If the quantity is not large, it is a good choice to put them in the refrigerator. Walnuts should not be a problem in the refrigerator for a year as long as they are kept dry.
Extended data:
Preparation of walnut before preservation
1. Ripening and harvesting of walnuts: when more than 80% of the peels of walnut trees turn from green to yellow, cracks appear at the top, involucres naturally crack, easily fall off, seeds harden, young embryos mature, and the core-shell is hard and yellow-white or brown, harvesting is carried out.
2. Pretreatment of walnut before storage:
Take off the skin of the walnut and dry it as soon as possible. For walnuts whose involucres are not cracked, they need to be stacked for 5-7 days before they are unsheathed.
Rinse. Soak walnuts in 60-80 times bleaching powder solution for 8- 10 minutes, take them out when the shell surface is bluish red, and rinse them with clear water.
Dry. Sun-dried walnuts turn from white to golden brown, and the diaphragm is easily broken, with an average water content of 6-8%.
Insect control and disinfection. Fumigating with carbon disulfide10.5 kg or methyl bromide10.7 kg for 24 hours per 100 m3 volume.