微环境气体调控对磨盘柿冰温贮藏期品质的影响

Effect of microenvironment gas regulation on the quality of Mopan persimmonduring controlled freezing point storage

为了探讨冰温下微环境气体调控(micro-environment modified atmosphere package+1-methylcyclopropene,mMAP+1-MCP)对磨盘柿贮藏品质的影响,采用对照、微环境自发气调(micro-environment modified atmosphere package,mMAP)、1-甲基环丙烯(1-methylcycloprpoenc,1-MCP)、微环境气体调控4种方式,在冰温(-0.5±0.3)℃下贮藏磨盘柿,研究不同处理对磨盘柿感官指标、营养品质、生理指标的影响。研究发现,与对照和其他2种处理相比,mMAP+1-MCP处理可较好地维持果实原有色泽,减缓果皮强度的下降、延缓果实贮藏期间V c、总酚、可溶性单宁含量的降低,减缓箱体O 2消耗,降低果实呼吸强度和乙烯生成速率,抑制果实相对电导率、丙二醛含量以及箱体内CO 2上升。mMAP+1-MCP处理组综合得分最高,果实品质最优。mMAP+1-MCP处理方式与丙二醛含量、相对电导率的相关性较低,说明mMAP+1-MCP处理可较好地维持果实的膜透性。磨盘柿mMAP+1-MCP处理与其他3组的差异指标为V c、呼吸强度和相对电导率。mMAP+1-MCP结合冰温贮藏可较好地维持磨盘柿品质,减少营养物质的损失。

The aim of this study was to investigate the effect of micro environmental gas regulation(mMAP+1-MCP)on the storage quality of Mopan persimmon during controlled freezing point storage.Control check(CK),micro environment modified atmosphere package(mMAP),1-methylcyclopropene(1-MCP)and micro-environment modified atmosphere package+1-methylcyclopropene(mMAP+1-MCP)were used in this study.The effects of different treatments on sensory,nutritional and physiological indexes of Mopan persimmon were studied under ice temperature(-0.5±0.3)℃.The results showed that compared with the control and other two treatments,the treatment of mMAP+1-MCP could maintain the original color of fruit and slow down the decline of peel strength.Moreover,it could reduce the content of V c,total phenol and soluble tannin,slow down the consumption of box O 2,reduce the respiration rate and ethylene production rate and inhibit the relative conductivity and malondialdehyde(MDA)of fruits with the content and CO 2 in the tank increased.The highest comprehensive score and the best fruit quality were obtained in the mMAP+1-MCP treatment group.The correlation between the treatment of mMAP+1-MCP and malondialdehyde content and relative conductivity was low,which indicated that the treatment of mMAP+1-MCP could maintain the membrane permeability of fruits better.The difference indexes of Mopan persimmon treated with mMAP+1-MCP were V c,respiratory intensity and relative conductivity.The results showed that the quality of Mopan persimmon could be well maintained and the loss of nutrients could be reduced by the combination of microenvironment gas control and controlled freezing point storage.