Alstonia scholaris Leaves: A Biochemical Marvel for Eco-friendly Copper Nanoparticles Synthesis

Author:

Labaran Ahmad Nasir1,Zango Zakariyya Uba2,Tailor Giriraj1,Alsadig Ahmed3,Usman Fahad4,Mukhtar Muhammad Tukur1,Garba Alhassan Muhammad1,Alhathlool Raed5,Ibnaouf Khalid Hassan5,Aldaghri Osamah A.5

Affiliation:

1. Mewar University

2. Al-Qalam University

3. CNR NANOTEC Institute of Nanotechnology

4. Connecticut State Colleges and Universities

5. Imam Mohammad Ibn Saud Islamic University (IMSIU)

Abstract

Abstract The utilization of plants for the production of metallic nanoparticles is gaining significant attention in research. In this study, we conducted phytochemical screening of Alstonia scholaris (A. scholaris) leaves extracts using various solvents, including chloroform, ethyl acetate, n-hexane, methanol, and water. Our findings revealed higher proportions of flavonoids and alkaloids in both solvents compared to other phytochemical species. In the methanol, extract proteins, anthraquinone and reducing sugar were not detected. On the other hand, the aqueous extract demonstrated the presence of amino acids, reducing sugar, phenolic compounds, anthraquinone, and saponins. Notably, ethyl acetate and chloroform extracts displayed the highest levels of bioactive compounds among all solvents. Intrigued by these results, we proceeded to investigate the antibacterial properties of the leaf extracts against two major bacterial strains, Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). All extracts exhibited significant zones of inhibition against both bacterial isolates, with S. aureus showing higher susceptibility compared to E. coli. Notably, the methanol extract displayed the most potent I hibitory effect against all organisms. Inspired by the bioactivity of the methanol extract, we employed it as a plant-based material for the green synthesis of copper nanoparticles (Cu-NPs). The synthesized Cu-NPs were characterized using Fourier infrared spectroscopy (FT-IR), UV-visible spectroscopic analysis, and scanning electron microscopy (SEM). The observed color changes confirmed the successful formation of Cu-NPs, while the FTIR analysis matched previously reported peaks, further verifying the synthesis. The SEM micrographs indicated the irregular shapes of the surface particles. From the result obtained by energy dispersive x-ray (EDX) spectroscopic analysis, Cu has the highest relative abundance of 67.41 wt.%. confirming the purity of the Cu-NPs colloid. These findings contribute to the growing field of eco-friendly nanotechnology and emphasize the significance of plant-mediated approaches in nanomaterial synthesis and biomedical applications.

Publisher

Research Square Platform LLC

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