Effect of storage microenvironment gas regulation on blue-berry quality and volatile substances during cold storage
The effect of different storage microenvironment gas regulations during cold storage on the fruit quality and volatile substances of ‘Berkeley’ blueberries between portable plastic box modified atmosphere(referred atmosphere) and portable plastic box modified atmosphere with 1-MCP(referred atmosphere + 1-MCP) was investigated.The results indicated that the gas contents of atmosphere was O2 3.2% ~9.4%,CO2 9.9% ~ 19.1%;atmosphere + 1-MCP was O2 3.4% ~ 10.3%,CO2 7.4% ~ 18.4% after cold storage 30 d.The effects of atmosphere + 1-MCP storage microenvironment gas regulation were more effective than atmosphere,and atmosphere were more effective than single cold storage on maintaining higher levels of blueberry good fruit rate,mean flesh firmness,TA and restraining blueberry respiration intensity;the differences of three treatments on postponing the descent of TSS and VC content were not significant,among them,atmosphere + 1-MCP was best and gas regulation followed.The volatile components of blueberry were mainly terpenes (66% ~75%) and aldehydes (15% ~ 22%);Three treatments resulted in lower levels of aldehydes and the decline rate was ck > atmosphere > atmosphere + 1-MCP during cold storage,while contents of terpenes was in upward trend with the largest increase of ck,the smallest rise of atmosphere + 1-MCP.