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

摘要: 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。

Abstract: 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. Results 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) , cellulose (CX) and amylase (AI) (p<0.05) , which reduced the increasing of water soluble 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.