1-MCP处理对采后机械损伤黄瓜生理生化特性的影响

Effect of 1-methylcyclopropene treatments on physiological and chemical characteristics of cucumber fruits suffered mechanical damage during post-harvest

黄瓜在采收贮运过程中,不可避免的出现机械损伤。本实验用1ppm1-MCP处理机械损伤黄瓜,研究1-MCP对其生理生化特性的影响。实验结果显示,1-MCP处理黄瓜果实的呼吸强度,相对电导率,丙二醛含量等与对照组差异显著;1-MCP处理能保持损伤黄瓜的CAT,POD,APX,PAL等酶活性,有利于保持采后损伤黄瓜的品质。结果表明:1-MCP处理能减轻黄瓜因机械损伤而导致的伤害,保持其品质特性。

Cucumber will be mechanical damaged inevitably in the process of storage and transportation during postharvest. In this experiment, cucum ber fruits were pretreatment with 1- methylcyclopropene （ 1- MCP） at 1 ppm to research the effects of 1- MCP on its physiological and chemical characteristics.The results showed that the respiration rate, electrolyte leakage, malondialdehyde （MDA）amounts of cucumber fruits with 1- MCP treatment were significant difference compared to the control.Cucumber fruits treated with 1-MCP could keep the activities of the catalase （ CAT）, peroxidase （ POD ）, ascorbate peroxidase （ APX ）, phenylalanine aminolyase （ PAL ） in mechanical damage cucumber fruits, conducive to maintain the quality of the mechanical damage cucumber fruits. The experiment results showed that cucumber fruits treated with l-MCP could relievethe injury which caused by mechanical damage and keep its character of quality.