Biosynthesis, characterisation and antibacterial activity of Mikania micrantha leaf extract-mediated AgNPs

Micro & nano letters

article

Aayushi Biswas¹  Chhangte Vanlalveni²  Partha Pradip Adhikari³  Ralte Lalfakzuala²  Lalthazuala Rokhum¹ 

[1] Department of Chemistry, National Institute of Technology Silchar;Department of Botany, Mizoram University;Genoine Research Laboratory Pvt. Ltd.

关键词: nanomedicine;    silver;    proteins;    antibacterial activity;    nanofabrication;    ultraviolet spectra;    visible spectra;    scanning electron microscopy;    nanoparticles;    transmission electron microscopy;    X-ray diffraction;    X-ray chemical analysis;    microorganisms;    Fourier transform infrared spectra;    particle size;    antibacterial activity;    mikania micrantha leaf extract-mediated AgNPs;    mikania micrantha leaf extract-mediated silver nanoparticle;    room temperature condition;    biosynthesised AgNPs;    XRD spectrum;    biogenic AgNPs;    TEM analysis;    ultraviolet-visible spectrophotometer;    FTIR spectra;    Fourier transform infrared spectroscopy;    X-ray diffraction;    transmission electron microscopy;    energy-dispersive X-ray spectroscopy;    (311) lattice planes;    (220) lattice planes;    (111) lattice planes;    (200) lattice planes;    plant extracts;    Ag nitrate solution;    amide II bonds;    amide I bonds;    proteins;    Gram-negative bacterial strains;    Gram-positive bacterial strains;    temperature 293 K to 298 K;    Ag;   

DOI  :  10.1049/mnl.2018.5661

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

In the present years, nanobiotechnology has to turn out to be an important division of research. Here, this work reported a novel Mikania micrantha leaf extract-mediated silver nanoparticle (AgNP) under room temperature condition. The biosynthesised AgNPs were further characterised by various analysis techniques such as ultraviolet–visible spectrophotometer, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and transmission electron microscope (TEM) energy-dispersive X-ray spectroscopy. The formation of AgNPs was confirmed by XRD spectrum which displayed intense peaks corresponding to the (1 1 1), (2 0 0), (2 2 0) and (3 1 1) lattice planes of Ag. The plant extracts stirred with Ag nitrate solution gradually changes its colour from light yellow to dark brown. The biogenic AgNPs were mostly spherical in shape with varying sizes ranging from 5 to 20 nm, as evident by TEM analysis. FT-IR spectra of the extract revealed the presence of amide I and amide II bonds of the proteins. The synthesised AgNPs showed excellent activity results against various Gram-positive and Gram-negative bacterial strains.

【 授权许可】

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