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Antifungal and Antibacterial Assay by Silver Nanoparticles Synthesized from Aqueous Leaf Extract of Trigonella foenum-graecum

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Abstract

This paper reports a safe, simple, green, nontoxic, and environment-friendly approach for the synthesis of silver nanoparticles (AgNPs) using aqueous leaf extract of Trigonella foenum-graecum at room temperature. The aqueous leaf extract was capable to act as a reducing, capping, and stabilizing agent. UV-visible spectroscopic, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscopy (TEM) techniques were used to characterize the synthesized AgNPs. The synthesized AgNPs were found to be stable, face-centered cubic, crystalline, and spherical and in the range of 20–25 nm. The antimicrobial activities of the synthesized AgNPs were investigated against plant pathogenic fungi Alternaria alternata and plant pathogenic bacteria Pseudomonas syringae. The assay results showed that A. alternata and P. syringae were inhibited at the 100 ppm of AgNPs in the respective medium. Antifungal assay shows the disruption of fungal mycelium at various places. Similarly, antibacterial assay shows the inhibition zones. These results confirmed that this protocol is a green, environment-friendly, and nontoxic method for the synthesis of AgNPs. Assay results confirmed that the synthesized AgNPs can be used as an effective growth inhibitor for various pathogenic microorganisms and applicable to control microbial systems.

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Acknowledgments

M. M. Khan would like to thanks the Chemical Sciences, Faculty of Science, University Brunei Darussalam, Brunei Darussalam for the support to complete this review article. A. U. Khan would like to thanks to Dr. Sandeep Bakshi, Chancellor of Jaipur National University, Jaipur 302 017, India for providing the research facilities.

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Authors and Affiliations

  1. School of Basic Sciences, Department of Chemistry, Jaipur National University, Jaipur, Rajasthan, 302017, India

    Azhar U. Khan

  2. Department of Botany, Aligarh Muslim University, Aligarh, UP, 202 002, India

    Masudulla Khan

  3. Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong,, BE 1410, Brunei Darussalam

    Mohammad Mansoob Khan

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  1. Azhar U. Khan
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  2. Masudulla Khan
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Correspondence to Mohammad Mansoob Khan.

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Khan, A.U., Khan, M. & Khan, M.M. Antifungal and Antibacterial Assay by Silver Nanoparticles Synthesized from Aqueous Leaf Extract of Trigonella foenum-graecum. BioNanoSci. 9, 597–602 (2019). https://doi.org/10.1007/s12668-019-00643-x

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