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Monstera deliciosa mediated single step biosynthesis of gold nanoparticles by bottom-up approach and its non-antimicrobial properties

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Abstract

In this study, we have stated the green biosynthesis of gold nanoparticles (AuNPs) by utilizing the extract of Monstera deliciosa leaves (MDL) as a reducing agent. Biosynthesized flat, thin, and single-crystalline gold nanotriangles obtained through centrifugation are then analyzed by different characterization techniques. The UV − visible absorption spectra of AuNPs exhibited maxima bands in the range of 500–590 nm, indicating a characteristic of AuNPs. XRD analysis revealed the formation of the (111)-oriented face-centered cubic (FCC) phase of AuNPs. ATR-IR spectra showed signatures of stretching vibrations of O–H, C-H, C=C, C=O, C–O, and C-N, accompanied by CH3 rocking vibrations present in functional groups of biomolecules. FESEM images confirmed spherical nanoparticles with an average diameter in the range of 53–66 nm and predominantly triangular morphology of synthesized AuNPs within the size range of 420–800 nm. NMR, GC–MS, and HR–MS studies showed the presence of different biomolecules, including phenols, flavonoids, and antioxidants in MDL extracts, which play a crucial role of both, reducing as well as stabilizing and capping agents to form stable AuNPs by a bottom-up approach. They were then investigated for their antibacterial assay against Gram-positive (S. aureus, B. subtilis) and Gram-negative (E. coli, P. aeruginosa) microorganisms, along with testing of antifungal potential against various fungi (Penicillium sp., Aspergillus flavus, Fusarium oxysporum, Rhizoctonia solani) using the well diffusion method. Here, biosynthesized AuNPs showed non-antimicrobial properties against all four used bacteria and fungi, showing their suitability as a contender for biomedical applications in drug delivery ascribed to their inert and biocompatible nature.

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The data that support the findings of this study are available on request from the corresponding author, BA.

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Acknowledgements

BA extend gratitude to Prof. Avinash C. Pandey, Director, Inter-University Accelerator Centre (IUAC), Aruna Asaf Ali Marg, Near Vasant Kunj, Vasant Kunj, New Delhi, 110067, India and Co-Investigator Dr. Ambuj Tripathi, Scientist ‘H’ IUAC, New Delhi for IUAC Project. All authors thank to Ph.D. student Rachana Yadwade for Antimicrobial Tests. (Financial Support by IUAC Project Ref. No. IUAC/XIII.7/UFR-70316 Dt. August 26, 2021). JS thanks to IUAC for Project Fellowship.

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Correspondence to Balaprasad Ankamwar.

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Shirsul, J., Tripathi, A., Mohanta, D. et al. Monstera deliciosa mediated single step biosynthesis of gold nanoparticles by bottom-up approach and its non-antimicrobial properties. 3 Biotech 14, 43 (2024). https://doi.org/10.1007/s13205-023-03898-0

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  • DOI: https://doi.org/10.1007/s13205-023-03898-0

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