JIA Wenru,ZHAO Ziying,ZUO Xiaoxia,et al.Effects of high relative humidity storage on alleviating chilling injury of cucumber fruit[J].Journal of Nanjing Agricultural University,2020,43(3):529-536.[doi:10.7685/jnau.201907062]





Effects of high relative humidity storage on alleviating chilling injury of cucumber fruit
贾雯茹1 赵紫迎1 左小霞1 金鹏1 金文渊2 郑永华1
1. 南京农业大学食品科学技术学院, 江苏 南京 210095;
2. 苏州大福外贸食品有限公司, 江苏 苏州 215000
JIA Wenru1 ZHAO Ziying1 ZUO Xiaoxia1 JIN Peng1 JIN Wenyuan2 ZHENG Yonghua1
1. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China;
2. Suzhou Dafu Foreign Trade Food Co., Ltd., Suzhou 215000, China
cucumber fruithigh relative humidity storagechilling injuryreactive oxygenwater loss
[目的]本文旨在探索高湿贮藏对减轻黄瓜果实冷害的作用及机制,为黄瓜果实采后冷藏保鲜提供理论依据。[方法]以典型的冷敏性水果黄瓜为试验材料,将其果实分别置于4℃的干雾控湿高湿冷库(相对湿度为95%~98%,高湿组)和普通冷库(相对湿度为70%~75%,低湿组)中保存15 d,每隔3 d取样测定果实冷害、品质及抗氧化系统的变化。[结果]高湿贮藏显著降低黄瓜果实的冷害指数(P<0.05),能较好保持其贮藏期品质。在整个贮藏期间,高湿组黄瓜果实的冷害指数和失重率均显著低于低湿组。与低湿贮藏相比,高湿贮藏还可以显著延缓黄瓜果实电导率和丙二醛含量的上升,保持较高的超氧化物歧化酶、过氧化氢酶、抗坏血酸过氧化物酶及过氧化物酶活性以及较高的DPPH(1,1-二苯基-2-三硝基苯肼)自由基和羟自由基清除力,抑制超氧阴离子和过氧化氢的积累,有效提高黄瓜果实的抗氧化能力。[结论]高湿贮藏可通过提高黄瓜果实的抗氧化能力来维持活性氧代谢平衡,从而减轻果实冷害发生,保持较好的品质。
[Objectives] The paper aimed to investigate the effect and mechanism of high relative humidity(RH)storage on alleviating the postharvest chilling injury of cucumber fruits,and provide a theoretical basis for the preservation of cucumber fruits. [Methods] Therefore,the cold-sensitive cucumber fruits were used as the experimental material and the fruits were stored at 4 ℃ for 15 days in dry-fog humidity controlled cold room(RH of 95%-98%,high RH group)and the normal cold room(RH of 70%-75%,low RH group). The samples were collected every 3 days to evaluate the changes of chilling injury and antioxidant system of cucumbers during storage. [Results] The high RH storage significantly reduced the chilling injury index of cucumber fruits(P<0.05)and maintained their storage quality. The chilling injury index and weight loss rate of cucumber fruits in the high RH group were significantly lower than those in the low RH group during the storage,while the contents of chlorophyll and ascorbic acid were significantly higher than those in the low RH group. Meanwhile,compared with low RH storage,high RH storage delayed the increase of relative conductivity and malondialdehyde content,maintained a higher activity of superoxide dismutase,catalase,ascorbate peroxidase and peroxidase and a higher scavenging activity against DPPH(1,1-diphenyl-2-picrylhydrazyl)and hydroxyl radicals,and inhibited the production of superoxide anion and hydrogen peroxide. [Conclusions] High RH storage could maintain the balance of ROS metabolism by improving the antioxidant capacity of cucumber fruit,thus alleviating the incidence of chilling injury and maintaining quality of the fruit.


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更新日期/Last Update: 1900-01-01