Effects of 2,5-Norbornadiene （NBD） on Physiological and Biochemical Responses of Fresh-cut Winter Squash  

作　　者：Wenzhong Hu Aili Jiang Chen Chen Mixia Tian Chenghui Liu Jia Liu 

机构地区：[1]Department of Food Engineering, College of Life Science, Dalian Nationalities University, Dalian 116600, China

出　　处：《Journal of Food Science and Engineering》2013年第3期123-130,共8页食品科学与工程（英文版）（美国）

摘　　要：Ethylene is one of the most important plant hormones that regulate physiological responses, maturity and senescence of postharvest fruits and vegetables. The determination of its role in the wound-healing response of fruits and vegetables is helpful in understanding the wound responses. 2,5-Norbornadiene （NBD）, inhibitor ethylene binding were used to determine the effect of ethylene action on wound-induced response of fresh-cut winter squash, a kind of vegetables known to produce ethylene markedly after cutting. The effect of NBD on the physiological and biochemical changes of fresh-cut winter squash was investigated in this experiment. The results showed that NBD had great effects on physio-biochemical metabolism of fresh-cut winter squash. Ethylene production was inhibited significantly by NBD. NBD also had an inhibition effect on polyphenol oxidase （PPO）, peroxidase （POD） and phenylalanine ammonia lyase （PAL） activity. The effect of NBD on lipoxygenase （LOX） activity and superoxide dismutase （SOD） was not obvious. NBD treated sample showed a more rapid increase in catalase （CAT） activity, which may help in healing the damage of the tissue. These information are important in understanding the fundamental biology of wound response and in the development of new technology to hasten wound-healing and, thereby, to minimize costly wound-related problems in fresh-cut industry.

关 键 词：2 5-Norbornadiene physiological and biochemical responses fresh-cut winter squash 

分 类 号：S642.3[农业科学—蔬菜学] Q939.114[农业科学—园艺学]