Essential Oils From Citrus unshiu Marc. Effectively Kill Aeromonas hydrophila by Destroying Cell Membrane Integrity, Influencing Cell Potential, and Leaking Intracellular Substances
文献类型： 外文期刊
作者： Zhong, Weiming 1 ; Chen, Kangyong 1 ; Yang, Linlin 1 ; Tang, Tao 1 ; Jiang, Sifan 1 ; Guo, Jiajing 2 ; Gao, Zhipeng 1 ;
作者机构： 1.Hunan Agr Univ, Coll Anim Sci & Technol, Hunan Engn Technol Res Ctr Featured Aquat Resource, Changsha, Peoples R China
2.Hunan Acad Agr Sci, Hunan Agr Prod Proc Inst, Changsha, Peoples R China
关键词： Citrus unshiu Marc; essential oil; chemical composition; antibacterial activity; Aeromonas hydrophila; mode of action
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：6.064； 五年影响因子：6.843 ）
ISSN：
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： Aeromonas hydrophila is one of the important pathogenic bacteria in aquaculture causing serious losses every year. Essential oils are usually used as natural antimicrobial agents to reduce or replace the use of antibiotics. The aim of this study was to evaluate the antibacterial activity and explore the mechanisms of essential oil from satsuma mandarin (Citrus unshiu Marc.) (SMEO) against A. hydrophila. The results of the gas chromatography-mass spectrometer demonstrated that SMEO contains 79 chemical components with the highest proportion of limonene (70.22%). SMEO exhibited strong antibacterial activity against A. hydrophila in vitro, the diameter of the inhibition zone was 31.22 +/- 0.46 mm, and the MIC and MBC values were all 1% (v/v). Intracellular material release, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and flow cytometry analysis revealed the dynamic antibacterial process of SMEO, the morphological changes of bacterial cells, and the leakage process of intracellular components. These results demonstrated that SMEO disrupted the extracellular membrane permeability. Our study demonstrated that SEMO has the potential to be used to control and prevent A. hydrophila infections in aquaculture.
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