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直流大气压辉光放电制备的果糖稳定银纳米颗粒对检疫性害虫的抗菌活性

Antibacterial Activity of Fructose-Stabilized Silver Nanoparticles Produced by Direct Current Atmospheric Pressure Glow Discharge towards Quarantine Pests.

作者信息

Dzimitrowicz Anna, Motyka-Pomagruk Agata, Cyganowski Piotr, Babinska Weronika, Terefinko Dominik, Jamroz Piotr, Lojkowska Ewa, Pohl Pawel, Sledz Wojciech

机构信息

Department of Analytical Chemistry and Chemical Metallurgy, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze St. Wyspianskiego 27, 50-370 Wroclaw, Poland.

Department of Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, Abrahama 58, 80-307 Gdansk, Poland.

出版信息

Nanomaterials (Basel). 2018 Sep 21;8(10):751. doi: 10.3390/nano8100751.

DOI:10.3390/nano8100751
PMID:30248904
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6215203/
Abstract

Development of efficient plant protection methods against bacterial phytopathogens subjected to compulsory control procedures under international legislation is of the highest concern having in mind expensiveness of enforced quarantine measures and threat of the infection spread in disease-free regions. In this study, fructose-stabilized silver nanoparticles (FRU-AgNPs) were produced using direct current atmospheric pressure glow discharge (dc-APGD) generated between the surface of a flowing liquid anode (FLA) solution and a pin-type tungsten cathode in a continuous flow reaction-discharge system. Resultant spherical and stable in time FRU-AgNPs exhibited average sizes of 14.9 ± 7.9 nm and 15.7 ± 2.0 nm, as assessed by transmission electron microscopy (TEM) and dynamic light scattering (DLS), respectively. Energy dispersive X-ray spectroscopy (EDX) analysis revealed that the obtained nanomaterial was composed of Ag while selected area electron diffraction (SAED) indicated that FRU-AgNPs had the face-centered cubic crystalline structure. The fabricated FRU-AgNPs show antibacterial properties against , , , pv. and strains with minimal inhibitory concentrations (MICs) of 1.64 to 13.1 mg L and minimal bactericidal concentrations (MBCs) from 3.29 to 26.3 mg L. Application of FRU-AgNPs might increase the repertoire of available control procedures against most devastating phytopathogens and as a result successfully limit their agricultural impact.

摘要

考虑到强制性检疫措施的高昂成本以及无病地区感染传播的威胁，开发针对国际法规规定需强制管控的细菌性植物病原体的高效植物保护方法至关重要。在本研究中，在连续流动反应放电系统中，利用流动液体阳极（FLA）溶液表面与针型钨阴极之间产生的直流大气压辉光放电（dc - APGD）制备了果糖稳定的银纳米颗粒（FRU - AgNPs）。通过透射电子显微镜（TEM）和动态光散射（DLS）评估，所得呈球形且随时间稳定的FRU - AgNPs平均尺寸分别为14.9±7.9 nm和15.7±2.0 nm。能量色散X射线光谱（EDX）分析表明，所获得的纳米材料由银组成，选区电子衍射（SAED）表明FRU - AgNPs具有面心立方晶体结构。所制备的FRU - AgNPs对 、 、 、 pv. 和 菌株具有抗菌性能，最低抑菌浓度（MICs）为1.64至13.1 mg/L，最低杀菌浓度（MBCs）为3.29至26.3 mg/L。FRU - AgNPs的应用可能会增加针对最具破坏性的植物病原体的可用控制方法，从而成功限制它们对农业的影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/115acb37be87/nanomaterials-08-00751-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/16bab47d1dae/nanomaterials-08-00751-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/b5cd595e7843/nanomaterials-08-00751-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/6956d03c0b4a/nanomaterials-08-00751-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/28e6d4aedb62/nanomaterials-08-00751-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/d6cbc7c73c39/nanomaterials-08-00751-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/115acb37be87/nanomaterials-08-00751-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/16bab47d1dae/nanomaterials-08-00751-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/b5cd595e7843/nanomaterials-08-00751-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/6956d03c0b4a/nanomaterials-08-00751-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/28e6d4aedb62/nanomaterials-08-00751-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/d6cbc7c73c39/nanomaterials-08-00751-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/42cb/6215203/115acb37be87/nanomaterials-08-00751-g006.jpg

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