PE袋包装对火龙果采后呼吸和活性氧代谢的影响  

Effects of Polythene Film Bag Packaging on Postharvest Respiration and Active Oxygen Metabolism in Dragon Fruit

作　　者：袁升浩 周广进 李真琴 洪克前[2] 宋康华[2] 梁永康 王俊宁 YUAN Sheng-hao;ZHOU Guang-jin;LI Zhen-qin;HONG Ke-qian;SONG Kang-hua;LIANG Yong-kang;WANG Jun-ning(College of Coastal Agricultural Sciences,Guangdong Ocean University,Zhanjiang,Guangdong 524088,China;Hainan Provincial Key Laboratory for Postharvest Physiology and Technology of Tropical Horticultural Products,South Subtropical Crops Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zharyiang,Guangdong 524091,China)

机构地区：[1]广东海洋大学滨海农业学院,广东湛江524088 [2]中国热带农业科学院南亚热带作物研究所海南省热带园艺产品采后生理与保鲜重点实验室,广东湛江524091

出　　处：《东南园艺》2022年第1期18-25,共8页Southeast Horticulture

基　　金：广东海洋大学大学生创新训练项目(CQ201610566059);园艺和园林专业实践技能型农林人才培养模式改革试点资助项目(GDOU2014041208);国家级农科教合作人才培养基地资助项目(GDOU2013040301)。

摘　　要：为探讨PE薄膜袋包装对火龙果常温(22±1)℃保鲜效果的影响,本研究以‘金都一号’火龙果为试验对象,分别采用0.05、0.08、0.16 mm等3种厚度的PE薄膜袋包装,测定了不同包装处理对火龙果常温贮藏过程中呼吸速率、失水率、腐烂率和活性氧代谢的变化。结果表明:常温下,3种厚度的PE袋包装均可有效地减少火龙果贮藏期间的水分蒸发和抑制果实的呼吸作用和ADH酶活性,其中0.05 mm袋效果最好。常温下,0.05 mm PE袋包装可有效地减少火龙果采后水分的蒸发,抑制呼吸作用,贮藏前期通过降低果实中的LOX酶活性来减少体内活性氧的产生,贮藏后期通过提高POD酶活性来及时清除活性氧的积累,从而有效地控制果实采后的膜脂过氧化作用,达到维持果实鲜度的作用。The work aims to investigate the influence of PE film bag packaging on the fresh-keeping effect of dragon fruit at room temperature(22±1)℃.Red-flesh dragon fruit‘Jindu No.1’was used as the test materials.The dragon fruits were packaged by PE film bags with three different thicknesses(0.05 mm,0.08 mm and 0.16mm).The effects of different packaging treatments on the respiration rate,water loss rate,decay rate and active oxygen metabolism of dragon fruit during storage at room temperature were studied.Compared with the control,PE bags with three different thicknesses could effectively reduce water evaporation and inhibit fruit respiration and ADH enzyme activity during storage of dragon fruit at room temperature.Among them,the 0.05 mm PE bag had the best effect.At room temperature,0.05 mm PE bag packaging could effectively reduce the water evaporation of red dragon fruit,and inhibited respiration.In order to effectively control the membrane lipid peroxidation and achieve the effect of maintaining fruit freshness,0.05 mm PE reduced the production of active oxygen by reducing the LOX enzyme activity during the early storage period and cleared the accumulation of active oxygen by improving the activity of POD enzyme activity in the later storage period.

关 键 词：火龙果 PE薄膜 包装 呼吸强度 活性氧代谢 

分 类 号：S667.9[农业科学—果树学]