J Appl Biomed 16:59-65, 2018 | DOI: 10.1016/j.jab.2017.10.001

Antibacterial and cytotoxicity effects of biogenic palladium nanoparticles synthesized using fruit extract of Couroupita guianensis Aubl.

Sathishkumar Gnanasekar^a, Jeyaraj Murugaraj^b, Balakrishnan Dhivyabharathi^a, Varunkumar Krishnamoorthy^c, Pradeep K Jha^d, Prabukumar Seetharaman^a, Ravikumar Vilwanathan^c, Sivaramakrishnan Sivaperumal^a,*

^a Bharathidasan University, School of Biotechnology and Genetic Engineering, Department of Biotechnology, Tiruchirappalli 620024, Tamil Nadu, India

^b University of Madras, National Centre for Nanosciences and Nanotechnology, Chennai 600025, Tamil Nadu, India

^c Bharathidasan University, School of Life Sciences, Department of Biochemistry, Tiruchirappalli 620024, Tamil Nadu, India

^d Indian Institute of Technology Kharagpur, School of Medical Science and Technology, Kharagpur 721302, West Bengal, India

Herein, we report a facile route to synthesize palladium nanoparticles (CGPdNPs) using the aqueous fruit extract of C. guianensis Aubl. as a potent biological reducing agent. Reduction of PdCl₂ solution into their nano scale was confirmed with the formation of a black precipitate which gives a reduced absorbance in UV-vis spectroscopy. Fourier transform infrared spectroscopy (FTIR) reveals the active role of phenolic constituents from C. guianensis in reduction and surface functionalization of nanoparticles (NPs). Dynamic light scattering (DLS) and zeta potential analysis confirms the generation of polydispersed highly stable NPs with large negative zeta value (-17.7 mV). Interestingly, X-ray Diffraction (XRD) pattern shows that the synthesized CGPdNPs were face centered cubic crystalline in nature. The HRTEM micrographs of CGPdNPs displays well-dispersed, spherical NPs in the size ranges between 5 and 15 nm with an average of 6 nm. It was also noticed that the synthesized CGPdNPs possess an effective antimicrobial activity against different bacterial pathogens. On the other hand, in vitro cell viability (MTT) assays reveals that the synthesized CGPdNPs exhibited an extraordinary anticancer properties. Eventually, hemocompatibility assay depicts the safe nature of synthesized NPs for biomedical application.

Keywords: Palladium nanoparticles; X-ray diffraction; Polyols; Bactericidal; Lung cancer

Received: November 25, 2016; Revised: May 20, 2017; Accepted: October 10, 2017; Published: February 1, 2018  Show citation