Antibacterial,antioxidant and photocatalytic activity of novel Rubus ellipticus leaf mediated silver nanoparticles |
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| Affiliation: | 1. Department of Botany, University of Poonch Rawalakot, Rawalakot 12350, Azad Kashmir, Pakistan;2. Department of Physics, University of Poonch Rawalakot, Rawalakot 12350, Azad Kashmir, Pakistan;3. Department of Botany, PMAS-Arid Agriculture University, Rawalpindi 46300, Pakistan;4. National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, Pakistan;5. College of General Education, University of Doha for Science and Technology, Al Tarafa, Jelaiah Street, Duhail North, PO Box 24449, Doha, Qatar;6. College of Health Sciences, University of Doha for Science and Technology, Al Tarafa, Jelaiah Street, Duhail North, PO Box 24449, Doha, Qatar |
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| Abstract: | Nanotechnology is an emerging field of science that has significant applications in applied sciences. In this study, silver nanoparticles (SNPs) were synthesized utilizing the leaf filtrate of Rubus ellipticus. SNPs were characterized using UV–visible spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction patterns to determine their morphology and chemical composition. The surface plasmon resonance of SNPs revealed a peak at 415 nm. The synthesized SNPs were mainly spherical crystals with an average size of 21.43 nm. When compared to plant extract and positive controls (AgNO3 and penicillin), SNPs demonstrated significant bactericidal activity against all the tested bacteria (gram-positive and gram-negative). The most effective bactericidal activity was found against Pseudomonas aeruginosa, with a minimum inhibitory concentration of 1.25 µg/mL. In addition, a dose-dependent antioxidant activity of SNPs was found against the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical with an average IC50 value of 72.84 µg/mL. The photocatalytic activity of Methylene blue (MB) dye decomposition under sunlight was studied. The results showed that MB degraded by 98 % after 150 min in the sun. Overall, the findings of this study indicate that R. ellipticus biosynthesized SNPs may have bactericidal and photocatalytic effects. |
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| Keywords: | Silver nanoparticles Antioxidant Antibacterial Photocatalytic activity |
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