低压静电场处理对蝴蝶兰切花保鲜效果的影响  

Preservation effect of cut Phalaenopsis by low voltage electrostatic field (LVEF)

作　　者：刘丽芳 邹诗晴 彭东辉[2] 胡嘉淼 林少玲[1] LIU Lifang;ZOU Shiqing;PENG Donghui;HU Jiamiao;LIN Shaoling(College of Food Science,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization,College of Landscape Architecture and Arts,Fujian Agriculture and Forestry University,Fuzhou 350002,China)

机构地区：[1]福建农林大学食品科学学院,福州350002 [2]福建农林大学风景园林与艺术学院,兰科植物保护与利用国家林草局重点实验室,福州350002

出　　处：《农业工程学报》2025年第2期310-317,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家重点研发计划项目(2023YFD1600505)。

摘　　要：为探讨低压静电场(low voltage electrostatic field,LVEF)处理对蝴蝶兰切花保鲜效果的影响,该研究以蝴蝶兰切花品种“天堂鸟”为试验对象,探究了低压静电场处理对蝴蝶兰切花瓶插期间观赏品质、理化指标及相关酶活性的变化,并通过低场核磁共振(low-field nuclear magnetic resonance,LF-NMR)技术分析蝴蝶兰切花的水分迁移和水分流失情况。结果表明:瓶插第28天时,与对照组相比,低压静电场组的蝴蝶兰切花能保持较好的外观形态,其鲜质量和花径分别显著(P<0.05)提高4.88%、4.98%,可溶性糖含量和可溶性蛋白含量分别显著(P<0.05)提高了0.75、4.09 mg/g,相对电导率和丙二醛(malondialdehyde,MDA)含量分别显著(P<0.05)降低了31.53%、21.96 nmol/g,超氧化物歧化酶(superoxide dismutase,SOD)、过氧化物酶(peroxidase,POD)和过氧化氢酶(catalase,CAT)的活性峰值分别显著(P<0.05)提高了19.58、20.77、20.21 U/g,同时,结果表明低压静电场处理延缓了蝴蝶兰切花的水分迁移和水分流失现象。综上,低压静电场处理延缓了蝴蝶兰切花的品质劣变,该研究结果可为其他切花的保鲜应用提供一定的理论依据和技术参考。This study aims to explore the effect of low voltage electrostatic field(LVEF)treatment on the preservation of cut Phalaenopsis.The cut Phalaenopsis"Paradise Bird"was treated by LVEF(test group)and without LVEF treatment(control group)in the vase period.The indexes were evaluated,including the fresh weight,flower diameter,soluble sugar content,soluble protein content,relative conductivity,malondialdehyde(MDA)content,and related antioxidant enzyme activities(SOD,POD,and CAT)of cut Phalaenopsis.A systematic analysis was implemented on the water migration and water loss of cut Phalaenopsis during the vase period.The content of the water phase was determined using low-field nuclear magnetic resonance(LF-NMR).The water distribution in the cut Phalaenopsis was also observed by MRI pseudo-color imaging.Firstly,the experimental objects were selected as the cut Phalaenopsis with good freshness,and smooth flower surface without the pests and mechanical damage.The cut Phalaenopsis were randomly divided into two groups.The cut Phalaenopsis was frozen at low temperature(without LVEF)as the control group,while the cut Phalaenopsis was treated with LVEF as the test group.Both groups were then stored at(4+1)C.The results showed that the cut Phalaenopsis treated by LVEF maintained a better appearance,compared with the control group.Among them,the fresh weight and flower diameter increased by 4.88%and 4.98%,respectively,and the content of soluble sugar and soluble protein increased by 0.75 and 4.09 mg/g,respectively.At the same time,the cell membrane permeability of cut Phalaenopsis was also maintained after LVEF treatment.The membrane lipid peroxidation was slowed down to improve the activity of antioxidant enzymes.The relative conductivity and MDA content also decreased by 31.53%and 21.96 nmol/g,respectively.Furthermore,the LVEF treatment also improved the activity of related antioxidant enzymes.Among them,the peak levels of SOD,POD,and CAT increased by 19.58,20.77,and 20.21 U/g,respectively.The water phase state of LF-NMR showe

关 键 词：电场 理化性质 品质控制 蝴蝶兰切花 低压静电场 低场核磁共振 保鲜效果 

分 类 号：S682.31[农业科学—观赏园艺]