Extracellular synthesis of silver nanoparticles by Pseudomonas sp THG-LS1.4 and their antimicrobial application

被引:126
|
作者
Singh, Hina [1 ]
Du, Juan [1 ,2 ]
Singh, Priyanka [1 ]
Yi, Tae Hoo [1 ]
机构
[1] Kyung Hee Univ, Coll Life Sci, Dept Oriental Med Biotechnol, Global Campus,1732 Deokyoungdaero, Yongin 446701, Gyeonggi Do, South Korea
[2] Zhengzhou Univ Light Ind, Coll Food & Bioengn, Henan Prov Collaborat Innovat Ctr Food Prod & Saf, Zhengzhou 450001, Henan, Peoples R China
关键词
Extracellular synthesis; Silver nanoparticles; Pseudomonas sp THG-LS14; Antimicrobial activity; REDUCTASE-MEDIATED SYNTHESIS; GOLD NANOPARTICLES; BIOSYNTHESIS;
D O I
10.1016/j.jpha.2018.04.004
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Silver nanoparticles (AgNPs) are known to have bacteriostatic and bactericidal effects. The present study highlights the extracellular synthesis of AgNPs and its antibacterial properties. The AgNPs were synthesized using Pseudomonas sp. THG-LS1.4 strain which had been isolated from soil. The AgNPs were characterized by field emission-transmission electron microscopy (FE-TEM), X-ray diffraction (XRD), Fourier transform-infrared (FT-IR) spectroscopy, and particle size distribution (DLS). The AgNPs displayed maximum absorbance at 412 nm and were irregular in shape ranging from 10 to 40 nm. The XRD spectroscopy results demonstrated the crystalline nature of nanoparticles. The AgNPs showed antimicrobial activity against Bacillus cereus, Staphylococcus aureus, Candida tropicalis, Vibrio parahaemolyticus, Escherichia coli and Pseudomonas aeruginosa. Furthermore, the AgNPs were also evaluated for their increased antibacterial activities with various antibiotics against Escherichia coli, Pseudomonas aeruginosa and Salmonella enterica. Additionally, AgNPs showd biofilm inhibition activity. The biosynthesized AgNPs were found to be a potent agent against tested pathogens. More importantly, we highlight the applications of AgNPs as an antimicrobial agent. (C) 2018 Xi'an Jiaotong University. Production and hosting by Elsevier B.V.
引用
收藏
页码:258 / 264
页数:7
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