Green Synthesis, Characterization and Applications of Noble Metal Nanoparticles Using Myxopyrum serratulum A. W. Hill Leaf Extract
In this study, we introduce a facile, green, one-pot and eco-friendly method for the synthesis of silver and gold nanoparticles using microwave-assisted strategy. The aqueous leaf extract of a medicinal plant Myxopyrum serratulum A. W. Hill was used as both stabilizing and reducing agents for this preparation. The synthesized nanoparticles were characterized by using UV-vis spectroscopy, FTIR spectroscopy and XRD, TEM and EDAX analyses. The silver and gold nanoparticles respectively show SPR band at 441 and 539 nm in UV-vis spectrum. The involvement of phytochemicals in the reduction and stabilization of nanoparticles was confirmed by FTIR spectroscopy. The crystalline fcc structure of nanoparticles was assured from XRD analysis. The size and morphology of nanoparticles were obtained from the TEM images. The presences of silver and gold elements were confirmed from their respective EDAX spectrum. The antimicrobial effects of leaf extract and synthesized silver and gold nanoparticles were tested against both bacterial and fungal strains by employing agar well diffusion method. The nanoparticles show high antimicrobial properties. The antioxidant properties were studied by simple DPPH assay. The nanoparticles exhibited better DPPH scavenging activities compared to leaf extract. In addition, it has been shown that the synthesized silver and gold nanoparticles functioned as an effective catalyst for the reduction dyes viz. 4- nitrophenol, methylene blue and Congo red by sodium borohydride.
KeywordsMyxopyrum serratulum A. W. Hill Silver nanoparticles Gold nanoparticles Antimicrobial Antioxidant Catalysis
Remya Vijayan is thankful to the University Grants Commission (UGC) for the financial assistance (JRF).
Compliance with Ethical Standards
Conflict of Interest
The authors declare that they have no conflict of interest.
- 4.Sujin Jeba Kumar, T., Balavigneswaran, C. K., Moses Packiaraj, R., Veeraraj, A., Prakash, S., Natheer Hassan, Y., & Srinivasakumar, K. P. (2013). Green synthesis of silver nanoparticles by Plumbago Indica and its antitumor activity against Dalton’s lymphoma ascites model. BioNanoScience, 3(4), 394–402. doi: 10.1007/s12668-013-0102-9.CrossRefGoogle Scholar
- 8.Poojary, M. M., Passamonti, P., & Adhikari, A. V. (2016). Green synthesis of silver and gold nanoparticles using root bark extract of Mammea suriga: characterization, process optimization, and their antibacterial activity. BioNanoScience, 6(2), 110–120. doi: 10.1007/s12668-016-0199-8.CrossRefGoogle Scholar
- 11.Yallappa, S., Manjanna, J., Peethambar, S. K., Rajeshwara, A. N., & Satyanarayan, N. D. (2013). Green synthesis of silver nanoparticles using Acacia farnesiana (sweet acacia) seed extract under microwave irradiation and their biological assessment. Journal of Cluster Science, 24(4), 1081–1092. doi: 10.1007/s10876-013-0599-7.CrossRefGoogle Scholar
- 20.Rani, T. S., & Lakshmi, S. S. (2013). Vitro anti-oxidant activity of Myxopyrum Serratulum A. W Hill Int. J. Pharm. Pharm. Sci, 5(4), 545–546.Google Scholar
- 21.Reddy, V., Venkata, N., & Kotakadi, S. (2015). First report of biomimetic synthesis of silver nanoparticles using aqueous callus extract of Centella asiatica and their antimicrobial activity. Applied Nanoscience, 5(7), 801–807. doi: 10.1007/s13204-014-0374-6.
- 27.Sridhara, V., Pratima, K., Krishnamurthy, G., & Sreekanth, B. (2013). Vegetable assisted synthesis of silver nanoparticles and its antibacterial activity. Asian Journal of Pharmaceutical and Clinical Research, 6(2), 53–57.Google Scholar
- 31.Guadie Assefa, A., Adugna Mesfin, A., Legesse Akele, M., Kokeb Alemu, A., Gangapuram, B. R., Guttena, V., & Alle, M. (2016). Microwave-assisted green synthesis of gold nanoparticles using Olibanum gum (Boswellia serrate) and its catalytic reduction of 4-nitrophenol and hexacyanoferrate (III) by sodium borohydride. Journal of Cluster Science, 28(3),917–935. doi: 10.1007/s10876-016-1078-8.