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A new green method for the synthesis of silver nanoparticles and their antibacterial activities against gram‐positive and gram‐negative bacteria
Author(s) -
Nurul Aini Annisa,
Al Farraj Dunia Abdulaziz,
Endarko Endarko,
Rubiyanto Agus,
Nur Hadi,
Al Khulaifi Manal Mohammed,
Hadibarata Tony,
Syafiuddin Achmad
Publication year - 2019
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201800412
Subject(s) - silver nanoparticle , ageratum conyzoides , chemistry , antibacterial activity , nuclear chemistry , fourier transform infrared spectroscopy , spectroscopy , ultraviolet visible spectroscopy , gram positive bacteria , gram negative bacteria , biomolecule , bacteria , nanoparticle , nanotechnology , organic chemistry , antimicrobial , chemical engineering , materials science , botany , biochemistry , escherichia coli , genetics , physics , quantum mechanics , gene , engineering , weed , biology
This study aims to evaluate the capability of Ageratum conyzoides and Mikania micrantha extracts to synthesize silver nanoparticles (AgNPs) and their antibacterial capability against gram‐positive and gram‐negative bacteria. Several properties of the synthesized AgNPs, including plasmonic, biomolecule bonding, shape, size, and antibacterial, were investigated. Ultraviolet–visible (UV–vis) spectroscopy was employed for characterizing their plasmonic properties. Functional groups on the produced AgNPs were investigated by Fourier‐transform infrared (FT‐IR) spectroscopy. The size and shape of the AgNPs were identified using the field‐emission scanning electron microscopy (FESEM). Inhibition zone measurement was carried out for evaluating the antibacterial capability. This study showed that the extracts of A. conyzoides and M. micrantha were able reducing agents as evidenced by the formation of the spherical AgNPs. UV–vis spectroscopy, FT‐IR spectroscopy, and FESEM confirmed the physicochemical characteristics of AgNPs. AgNPs that were synthesized using M. micrantha were slightly smaller than those produced using A. conyzoides . In general, the present work establishes that the synthesized AgNPs have antibacterial capability depending on their size and synthesis procedure.