不同湿度的热空气处理对西葫芦果实低温贮藏抗冷性和活性氧代谢的影响  

Effects of different humidity of hot air treatment on cold resistant quality and antioxidant active oxygen metabolism of Cucurbita pepo L.during low temperature storage

作　　者：盖晓阳 张敏[1,2,3] 李佳乐[1] 胡均如 GAI Xiaoyang;ZHANG Min;LI Jiale;HU Junru(College of Food Science and Technology,Shanghai Ocean University,Shanghai 201306;National Experimental Teaching Demonstration Center for Food Science and Engineering(Shanghai Ocean University),Shanghai 201306;Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation,Shanghai 201306)

机构地区：[1]上海海洋大学食品学院,上海201306 [2]食品科学与工程国家级实验教学示范中心(上海海洋大学),上海201306 [3]上海冷链装备性能与节能评价专业技术服务平台,上海201306

出　　处：《安徽农业大学学报》2021年第3期382-389,共8页Journal of Anhui Agricultural University

基　　金：国家自然科学基金(31371526)资助。

摘　　要：为探究不同湿度的热空气处理对西葫芦果实低温贮藏品质抗冷性及活性氧代谢的影响,西葫芦果实采后分别经40℃,80%、60%和20%三种湿度的热空气处理1 h,复温后在冷库贮藏5、10、15 d监测果实品质冷害症状、活性氧代谢水平及抗氧化指标。结果表明,与对照组相比,湿度为80%、60%的热空气处理组能延缓西葫芦果实硬度和抗坏血酸含量的下降,抑制电解质渗透率、MDA含量、LOX活性的上升以及CAT、POD、APX活性的下降,同时促进可溶性蛋白的合成。其中80%组的冷害指数、硬度、MDA含量、抗坏血酸含量、LOX、CAT、POD活性和可溶性蛋白含量均显著优于其他组,表明80%组是实验中的最佳处理湿度。该研究为西葫芦的贮藏保鲜提供新的参考与思路。In order to explore the effects of hot air treatments with different humidity on the cold resistance and active oxygen metabolism of Cucurbita pepo L.during low-temperature storage,the Cucurbita pepo L.were treated with hot air at 40℃,80%,60%,and 20%humidity for 1 h after harvest.After rewarming,the fruit quality was stored in the cold storage for 5,10,and 15 days to monitor the symptoms of chilling injury,the level of active oxygen metabolism and antioxidant indicators.The results showed that:compared with the control group,the hot air treatment group with humidity of 80%and 60%could delay the decrease of fruit hardness and ascorbic acid content of zucchini,and inhibit the increase of electrolyte permeability,MDA content,LOX activity,CAT,POD,APX The decrease in activity also promotes the synthesis of soluble protein.Among them,the cold injury index,hardness,MDA content,ascorbic acid content,LOX,CAT,POD activity,and soluble protein content of the 80%group were significantly better than the other groups,indicating that the 80%group was the best treatment humidity in the experiment.This research provides new references and ideas for the storage and preservation of zucchini.

关 键 词：湿度 热处理 西葫芦 冷害 活性氧 

分 类 号：TS255.36[轻工技术与工程—农产品加工及贮藏工程]