Green synthesis of silver nanoparticles and biopolymer nanocomposites: a comparative study on physico-chemical, antimicrobial and anticancer activity
- 152 Downloads
The current report was intended towards comparative study of green-synthesized biogenic Rhubarb silver nanoparticles (RS-AgNPs) and chitosan crosslinked silver nanocomposites (CSHD-AgNCs). The physico-chemical characterization was done by UV–visible, FTIR, scanning electron microscopy (SEM), transmission electron microscopy (TEM), EDX, TGA, XRD and zeta potential (\(\zeta \)). The analysis and spectroscopic characterization was done by SEM and TEM and their results reveal that the nanoparticles are spherical in shape, with average size ranges from 5 to 50 nm, and was gathered by face centered cubic (FCC) structure throughout the polymer matrix and stable without any protecting or capping reagents over 450 days. The antimicrobial property of RS-AgNPs and CSHD-AgNCs (\(\zeta = +29.6\) and \(+\)32.8 mV) was evaluated against E. coli and S. aureus and showed an effective inhibitory property. The RS-AgNPs and CSHD-AgNCs were assessed for their anticancer activity against HeLa cell line by MTT method, and it reveals a dose–response activity, time and cell line-dependent cytotoxicity. Based on the results obtained, the RS-AgNPs exhibited higher toxicity over CSHD-AgNCs after 24 h incubation of HeLa cells with different concentrations and is negligible for the aqueous Rhubarb extract. It was concluded that the changes in anticancer activity towards HeLa cells due to biological activity of silver nanoparticles depend on their method of biosynthesis and their physico-chemical nature.
KeywordsBiogenic silver nanoparticles biopolymer nanocomposites nanoparticles stability antimicrobial activity anticancer activity
We are grateful to the Ministry of Education, Youth and Sports of the Czech Republic—NPU Program I (LO1504) and Slovak Grant Agency VEGA for the financial support in the Project 2/0124/18. We are also thankful to Department of Material Science and Nanotechnology (IISc) Bangalore, India, for TEM analysis.
- 4.Osman H 2014 World Appl. Sci. J. 29 592Google Scholar
- 9.Visweswara Rao P, Nallappan D, Madhavi K, Rahman S, Wei L J and Gan S H 2016 Oxid. Med. Cell Longev. 2016 1Google Scholar
- 12.Sileikaite A, Prosycevas I, Puiso J, Juraitis A and Guobiene A 2006 Mater. Sci. 12 287Google Scholar
- 13.Durga Praveena V and Vijaya Kumar K 2014 Ind. J. Adv. Chem. Sci. 2 171Google Scholar
- 14.Malina D, Sobczak-Kupiec A, Wzorek Z and Kowalski Z 2012 Dig. J. Nanomater. Bios. 7 1527Google Scholar
- 20.Ankanna S, Prasad T N V K V, Elumalai E K and Savithramma N 2010 Dig. J. Nanomater. Bios. 5 369Google Scholar
- 27.A brief history of Rhubarb in western civilization, http://www.highaltituderhubarb.com/Pages/history.aspx. Accessed 16 December 2016
- 28.Health benefits of Rhubarb https://www.organicfacts.net/health-benefits/fruit/rhubarb.html. Accessed 16 December 2016
- 29.Li H, Yang T, Zhou H, Du J, Zhu B and Sun Z 2017 Front. Pharmacol. 7 536Google Scholar
- 30.Ramasubba Reddy P, Nabanita S, Ganesh S D, Zuzana K, Monika S and Petr S 2017 Int. J. Polym. Mater., https://doi.org/10.1080/00914037.2017.1291516