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聚合物季铵盐包覆的银纳米颗粒在水中的抗菌性能

Antibacterial performance of polymer quaternary ammonium salt-capped silver nanoparticles on in water.

作者信息

Wang Jingyu, Sui Minghao, Ma Zhanfang, Li Hongwei, Yuan Bojie

机构信息

School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China.

State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China

出版信息

RSC Adv. 2019 Aug 15;9(44):25667-25676. doi: 10.1039/c9ra05944j. eCollection 2019 Aug 13.

DOI:10.1039/c9ra05944j
PMID:35530077
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9070046/
Abstract

In this study, we prepared polymer quaternary ammonium salt-capped silver nanoparticles (PQAS-AgNPs) and investigated their antimicrobial activities. The antimicrobial effectiveness of PQAS-AgNPs on (), and the effect of dose, pH, chloride ion and humic acid (HA) were studied. It was found that PQAS-AgNPs revealed excellent antimicrobial activity to , compared with polyvinylpyrrolidone-capped silver nanoparticles (PVP-AgNPs), which was the reference antimicrobial material. The positive surface, the antimicrobial activity of PQAS, and the synergistic antibacterial effect between PQAS and AgNPs contributed to the significant antibacterial superiority of PQAS-AgNPs. This study demonstrated that the impact of the dose of the material was positive and the microbiocidal efficacy of PQAS-AgNPs was stronger at lower pH. In addition, the antibacterial performance of PQAS-AgNPs decreased in the presence of Cl and HA. Finally, in combination with the results of FCM and adenosine triphosphate (ATP) content, it was found that PQAS-AgNPs destroyed the respiratory chain of bacterial cells, reduced the synthesis of ATP, and destroyed the cell wall and cell membrane function.

摘要

在本研究中，我们制备了聚合物季铵盐包覆的银纳米颗粒（PQAS-AgNPs）并研究了它们的抗菌活性。研究了PQAS-AgNPs对（此处原文括号内容缺失）的抗菌效果，以及剂量、pH值、氯离子和腐殖酸（HA）的影响。结果发现，与作为参考抗菌材料的聚乙烯吡咯烷酮包覆的银纳米颗粒（PVP-AgNPs）相比，PQAS-AgNPs对（此处原文缺失内容）显示出优异的抗菌活性。PQAS-AgNPs的正表面、PQAS的抗菌活性以及PQAS与AgNPs之间的协同抗菌作用促成了其显著的抗菌优势。本研究表明，材料剂量的影响是积极的，且PQAS-AgNPs在较低pH值下的杀菌效果更强。此外，在Cl和HA存在的情况下，PQAS-AgNPs的抗菌性能下降。最后，结合流式细胞术（FCM）和三磷酸腺苷（ATP）含量的结果发现，PQAS-AgNPs破坏了细菌细胞的呼吸链，减少了ATP的合成，并破坏了细胞壁和细胞膜的功能。

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