摘要
研究了贮前二苯胺(DPA)处理对在低温条件下(0℃)贮藏鸭梨果实的果心褐变及生理变化的影响。结果表明:急骤降温(0℃)可产生严重的早期果心褐变,贮前二苯胺处理在一定条件下可减轻鸭梨果实的早期褐变,贮藏60 d时DPA处理果实的褐变指数为0.233,而对照为0.417;同时DPA处理可降低果实的乙烯释放量、抑制多酚氧化酶活性、保持果实酚类物质含量,对丙二醛(MDA)含量和果实相对电导率也有一定影响。
The effect of the diphenylamine-treatment on the core browning and physiological changes of ＇Ya-Li＇ pears stored at 0℃ were studied in this paper. The results showed that the fruits treated at 0℃ appeared serious core browning at early-period storage. The index of core browning at early-period storage decreased markedly after 60 d, the index of core browning of DPA-treated fruits was 0. 233,and that of the control was 0. 417; meanwhile, ethylene production was cut down,activity of PPO was restrained, content of phenolics was maintained and content of malondialdehyde was affected with diphenylamine-treatment.
出处
《北方园艺》
CAS
北大核心
2009年第6期203-205,共3页
Northern Horticulture
关键词
鸭梨
冷害
二苯胺
果心褐变
生理变化
Pear
Chilling injury
Diphenylamine
Core browning
Physiological changes
