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Green synthesis of silver nanoparticles and evaluation of their anti-bacterial activities: use of Aloe barbadensis miller and Ocimum tenuiflorum leaf extracts

  • Saurabh Sharma
  • Kuldeep Kumar
  • Naveen Thakur

Abstract

The presence of various phytochemicals makesthe leaf extract-based green synthesis advantageous toother conventional methods, as it facilitates the productionof non-toxic by-product. In the present study, leaf extractsfrom two different plants:Aloe barbadensis millerandOci-mum tenuiflorum, were used to synthesise Ag nanoparticles.The absorbance at 419-432 nm from UV-visible spectroscopyindicates the formation of Ag in the synthesised samples.The effect of precursors’ concentration on the stability, sizeand shape of the synthesised samples has also been in-vestigated at constant heating temperature, stirring time,and the pH of the solution. The TEM results showed thatall the synthesised samples of nanoparticles demonstratedstability with a size range of 7-70 and 9-48 nm withAloebarbadensis millerandOcimum tenuiflorumleaf extracts,respectively. The formation of smaller Ag nanoparticlesdue to utilisation of different precursor concentration andleaf extracts was also explained. The synthesised samples’anti-bacterial activity was examined against the pathogens,Bacillus subtilis,Staphylococcus aureus, andEscherichiacoli. In general, the green synthesis approach established aprospective for developing highly stable Ag nanoparticleswith rigid particle shape/size distribution from differentleaf extracts for the development of better anti-bacterialagents.

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How to Cite

Sharma , S. ., Kumar , . K. ., & Thakur, N. . (2021). Green synthesis of silver nanoparticles and evaluation of their anti-bacterial activities: use of Aloe barbadensis miller and Ocimum tenuiflorum leaf extracts. Nanofabrication, 6, 52–67. Retrieved from https://eaapublishing.org/journals/index.php/nanofab/article/view/264

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Published: 2021-12-31

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Copyright (c) 2021 Saurabh Sharma , Kuldeep Kumar , Naveen Thakur

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This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.