Green Synthesis and Functionalization of Silver Nanoparticles and Their Biological Applications Using Tinospora cordifolia Extract
Abstract
Nanotechnology has revolutionized various industries, with silver nanoparticles (AgNPs) being particularly significant due to their biocompatibility and versatile applications. Traditional synthesis methods for AgNPs often involve harsh chemicals, raising concerns about environmental sustainability. Using whole plant extract from Tinospora cordifolia as a reducing agent, this work investigates the green synthesis of AgNPs, which provides a more environmentally friendly technique. The plant extract's abundant phyto-constituents, such as phenolic acids and flavonoids, stabilize the nanoparticles in addition to lowering the silver ions. To further improve these AgNPs' stability and biocompatibility, we functionalized them using polyvinyl pyrrolidone (PVP). The effective synthesis and functionalization of the produced PVP-b-AgNPs were confirmed by characterization utilizing FTIR, HR-TEM, XRD, and UV-Vis spectroscopy. Biological evaluations revealed that PVP-b-AgNPs exhibit antimicrobial activities compared to unfunctionalized b-AgNPs. These findings highlight the potential of T. cordifolia leaf extract in the sustainable synthesis of functionalized AgNPs, providing a scalable, eco-friendly alternative for applications in healthcare and other industries.
References
[2] Adeola, F. O. (2020). Global impact of chemicals and toxic substances on human health and the environment. Handbook of global health, 1-30.
[3] Nasrollahzadeh, M., Sajadi, S. M., Sajjadi, M., & Issaabadi, Z. (2019). An introduction to nanotechnology. In Interface Sci. Technol. (Vol. 28, pp. 1-27). Elsevier.
[4] Huston, M., DeBella, M., DiBella, M., & Gupta, A. (2021). Green synthesis of nanomaterials. Nanomater., 11(8), 2130.
[5] Payyappallimana, U., Ravikumar, K., & Venkatasubramanian, P. (2023). Can Guduchi (Tinospora cordifolia), a well-known ayurvedic hepato-protectant cause liver damage?. J. Ayu. Integr. Med., 14(1), 100658.
[6] Bhattarai, B., Zaker, Y., & Bigioni, T. P. (2018). Green synthesis of gold and silver nanoparticles: Challenges and opportunities. Curr. Opin. Green Sustain. Chem., 12, 91-100.
[7] Shahzadi, S., Fatima, S., Shafiq, Z., & Janjua, M. R. S. A. (2025). A review on green synthesis of silver nanoparticles (SNPs) using plant extracts: a multifaceted approach in photocatalysis, environmental remediation, and biomedicine. RSC Adv., 15(5), 3858-3903.
[8] Dhama, K., Sachan, S., Khandia, R., Munjal, A., MN Iqbal, H., K. Latheef, S., ... & Dadar, M. (2016). Medicinal and beneficial health applications of Tinospora cordifolia (Guduchi): a miraculous herb countering various diseases/disorders and its immunomodulatory effects. Recent patents on endocrine, metabolic & immune drug discovery, 10(2), 96-111.
[9] Arunachalam, K., Yang, X., & San, T. T. (2022). Tinospora cordifolia (Willd.) Miers: Protection mechanisms and strategies against oxidative stress-related diseases. J. Ethnopharmacol., 283, 114540.
[10] Saha, S., & Ghosh, S. (2012). Tinospora cordifolia: One plant, many roles. Anc. Sci. Life., 31(4), 151-159.
[11] Sangani, S. R., Dabhi, R. C., Kawad, M., Parmar, J., Arya, P. S., Chauhan, R. J., ... & Ameta, R. K. (2023). Buchwald coupling promoted benign synthesis of benzoxazine derivatives supported Cu complexes with their multipurpose potential in antimicrobial and catalytical fields. J. Mol. Struct., 1285, 135380.
[12] Kawad, M., Sangani, S., Parmar, J., Dabhi, R. C., Arya, P. S., Teraiya, N., ... & Ameta, R. K. (2024). 2-Ferrocene-4-amine-1H-benzo [d] imidazole and their derivatives: Synthesis, biological and docking study. Polyhedron, 264, 117242.
[13] Ashtekar, V., Dabhi, R. C., Trivedi, V. A., Arya, P. S., Patel, A., Thakor, P., ... & Patel, H. N. (2025). Functionalization of pyrazolo [1, 5-a] pyrazine-Schiff bases for assessing liquid crystalline properties and antimicrobial activity. J. Mol. Struct., 1335, 141889.