低温驯化对冰温、1-MCP双重处理磨盘柿硬度和软化相关物质代谢的影响

Effect of cold acclimation combined 1-MCP and controlled freezing point storage on several physiological indexes related to fruit softening of Mopan persimmon

以经过1-MCP处理过的磨盘柿为试材,直接冰温贮藏为对照,将低温驯化处理与冰温技术相结合,研究了冰温、1-MCP双重处理贮藏前低温驯化对磨盘柿硬度和软化相关物质代谢的影响。结果表明:与对照相比,低温驯化可有效降低乙烯生成速率的上升(p<0.05),抑制PG酶、CX酶、淀粉酶活性的上升(p<0.05),抑制了可溶性果胶含量的升高(p<0.05),保持果实硬度(p<0.05)。结果表明:磨盘柿经低温驯化再进行冰温、1-MCP双重处理贮藏的效果优于直接冰温、1-MCP双重处理贮藏的效果。

To investigate the effect of cold acclimation combined with 1-MCP and controlled freezing point storage on several physiological indexes related to fruit softening of Mopan persimmon was studied. The control group was 1-MCP combined with controlled freezing point storage. Resurts showed that cold acclimation combined with 1-MCP and controlled freezing point storage not only effectively reduced ethene production （p〈0.05）,but also retarded the activities of polygalacturonase （ PG ）, cellu lose （CX） and amylase （AI） （p〈0.05）, which red uced the increasing of water sotuble pectin （WSP）（p〈0.05） significantly and delayed the decrease of fruit firmness （p〈0.05） effectively. Therefore,cold acclimation combined with 1-MCP and controlled freezing point storage was better than 1-MCP combined with controlled freezing point storage.