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Assessment of antimycobacterial activity and DFT studies of green-mediated CdO-doped Ag nanoparticles using Diethyl phthalate enriched Sauropus androgynus leaf extract
Abstract
Tuberculosis (TB) is a potentially fatal disease. The need for novel anti-tubercular drugs has arisen due to the emergence of a high degree of treatment resistance and the predominance of Mycobacteria other than TB (MOTT). Accordingly, the current study reports the facile production of silver and silver-cadmium oxide nanomaterials utilizing leaf extract from Sauropus androgynus. The synthesized nanoparticles (NPs) were characterized using an ultraviolet-visible spectrophotometer (UV-Vis), X-Ray Diffraction analysis (XRD), Scanning Electron Microscope (SEM), Energy Dispersive X-Ray analysis (EDAX), High Resolution Transmission Electron Microscope analysis (HR-TEM), and fourier transform infrared (FTIR) studies. An aggregated spherical form with Ag, Cd, and O signals was observed in the SEM-EDAX analysis, and the XRD shows distinctive crystallinity. For the Ag-CdO nanocomposite and bare AgNPs, the average particle size was 17 nm and 23 nm, respectively, as determined by HR-TEM analysis. Ag and Ag-CdO NPs demonstrated distinct inhibition zones ranging from 13 to 16 mm, demonstrating their inhibitory efficacy, when the antibacterial activity was tested against Staphylococcus and Pseudomonas at various concentrations. A promising in vitro antimycobacterial activity against M. smegmatis was also demonstrated by the Ag-CdO nanocomposite. According to Density Functional Theory (DFT) studies, diethyl phthalate (DP) found in Sauropus androgynus leaf extract is what causes the extract to function as a reducing agent when Ag+ ions are reduced to Ag 0. Good ligand interaction was shown in molecular docking studies of PDB ID: 5D6N, which correlated with the in vitro antimycobacterial activity. As a result, the synthesized NPs may be useful as antibacterial and antitubercular agents.
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Metadata
- Authors
- James, J. J., Amalanathan, M., Kumar, N. S., Mary, M. S. M., Manoj, D. S., Sillanpää, M., Al-Farraj, S., Rani, S. D., & Seema, A.
- Venue
- Arabian Journal of Chemistry
- Publisher
- Scientific Scholar
- Published
- 2025-07-31
- Volume
- 18
- Pages
- 2422024
- ISSN
- 1878-5379
- 1878-5352
- Cited by
- 1
- Language
- en
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- James, J. J., Amalanathan, M., Kumar, N. S., Mary, M. S. M., Manoj, D. S., Sillanpää, M., Al-Farraj, S., Rani, S. D., & Seema, A. (2025). Assessment of antimycobacterial activity and DFT studies of green-mediated CdO-doped Ag nanoparticles using Diethyl phthalate enriched Sauropus androgynus leaf extract. Arabian Journal of Chemistry. https://doi.org/10.25259/ajc_242_2024
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