Based on industrial atomization devices,the efficiency of atomization and fumigation has been improved through hardware and software modifications and process design of atomization and fumigation equipment.By adding three sets of medicine and fumigant boxes and introducing a high-pressure atomization machine and an ultramicro-atomization nozzle,the diversity of the atomization and fumigation options was increased and the automatic proportioning of fumigants(ratio ranges of 1:1-1:200)was achieved.The optimal pressure of the high-pressure atomization machine 5.0 MPa,whereas the optimal mode was intermittent atomization for 75 s when an acrylic fumigation box was used.In a storage warehouse of 550 m3,the optimal pressure for the high-pressure atomization machine was 6.5 MPa,whereas the optimal operation mode was continuous atomization for 7 min,followed by natural precipitation of the fumigant natural for 3 min.The ultramicro-atomization nozzles were installed at 1 m intervals and the placement area of the specimens for atomization and fumigation were located 50 cm away from the wall of the warehouse and vertically 0.5～1.0 m below the ultramicro-atomization nozzles.Fumigation treatment with 40 mmol/L salicylate(SA)was effective in maintaining the storage quality of'Xiaobai'and'Saimaiti'apricots.At the end of the 7 day storage period,firmness of'Xiaobai'apricots was 8.72 N,whereas the soluble solids(TSS)and titratable acid(TA)contents were 15.9%and 0.49%,respectively,representing 1.66-,1.10-,and 1.58-fold increase compared to those of the control group,respectively.The decay rate was 0 after treatment with 40 mmol/L SA.The firmness of the Saimaiti apricots was 9.01 N,whereas TSS and TA contents were 13.5%and 0.67%,respectively(1.57-,1.69-,and 1.60-fold higher than those of the control group,respectively).The decay rate was also 0 for Saimaiti apricots fumigated using SA.These results provide insights and technical support for the application of atomization and fumigation technologies in the storage and preservation of fresh apricots.
atomization and fumigationapricotssalicylic acidpreservation
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