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Procedure Optimization of Limonia acidissima Leaf Extraction and Silver Nanoparticle Synthesis for Prominent Antibacterial Activity
Author(s) -
Aminul Haque M.,
Shamim Hossain M.,
Akanda Md. Rajibul,
Haque Md. Aminul,
Naher Shamsun
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201904019
Subject(s) - citrobacter freundii , silver nanoparticle , bacillus subtilis , antibacterial activity , extraction (chemistry) , antimicrobial , nanoparticle , nuclear chemistry , escherichia coli , staphylococcus aureus , chemistry , chromatography , materials science , bacteria , nanotechnology , biology , organic chemistry , enterobacteriaceae , biochemistry , genetics , gene
The authors herein report the optimum conditions for the eco‐friendly synthesis of silver nanoparticles (AgNPs) using Limonia acidissima leaf extract as a reductant. The synthesis of AgNPs using the diluted (0.25 g/mL) leaf extract under direct sunlight produced more homogenous nanoparticles within the shortest possible time. The effects of leaf extraction conditions as well as the reaction time, presence/absence of light, and concentration of the leaf extract as a green reductant for AgNP synthesis are extensively investigated. The synthesized AgNPs have a better homogeneity of size and shape (spherical particles with a size of approximately 24–30 nm and an average size of 27 nm), as confirmed by UV‐visible spectroscopy, EDS, and SEM, and the AgNP synthesis was complete within a short time (10 min), as confirmed by colorimetric/optical analysis. The as‐obtained nanoparticles show a prominent antimicrobial activity against most of the resistant human pathogens such as Escherichia coli , Citrobacter freundii , Bacillus subtilis , Pseudomonas aeruginosa , Salmonella typhimurium , and Staphylococcus aureus .