Open AccessCOMPARATIVE ANALYSIS OF METAL NANOPARTICLES SYNTHESIZED FROM HIBISCUS ROSA SINESIS AND THEIR ANTIBACTERIAL ACTIVITY ESTIMATION AGAINST NINE PATHOGENIC BACTERIA
Author(s) -
Shruti Tyagi,
Ajay Kumar,
Pankaj Tyagi
Publication year - 2017
Publication title -
asian journal of pharmaceutical and clinical research
Language(s) - English
Resource type - Journals
eISSN - 2455-3891
pISSN - 0974-2441
DOI - 10.22159/ajpcr.2017.v10i5.17458
Subject(s) - antibacterial activity , pathogenic bacteria , staphylococcus epidermidis , silver nanoparticle , enterobacter aerogenes , chemistry , bacteria , colloidal gold , agar diffusion test , micrococcus luteus , nuclear chemistry , microbiology and biotechnology , escherichia coli , staphylococcus aureus , biology , nanoparticle , materials science , biochemistry , nanotechnology , genetics , gene
Objective: This study demonstates a simple, cost effective protocol for biosynthesis of stable silver (Ag) and gold (Au) nanoparticles from Hibiscus Rosa sinesis and their comparison by applying antibacterial activities against nine pathogenic bacterial species.Methods: Silver (Ag) and gold (Au) nanoparticles were biosynthesized from Hibiscus Rosa sinesis were characterized by UV–VIS spectroscopy, FTIR and TEM. The antibacterial activities of AgNPs and AuNPs were evaluated against 9 pathogenic bacterial species Pseudomonas aeroginosa, Bacillus subtilis Micrococcus luteus, Staphylococcus aureus, Staphylococcus epidermidis, Enterobacter aerogens, Escherichia coli, Streptococcus pneumoniae, Aeromonas hydrophila by the agar disc diffusion method.Results: Synthesized AgNPs were obtained in 13.01 to 28.14 nm size range, while AuNPs were in 6.32 to 18.19 nm size range. The results of Fourier transform infrared spectroscopy (FTIR) spectra indicates that the AuNPs are bound to amine groups and the AgNPs to carboxylate ion groups. The antibacterial activities of AgNPs, the zone of inhibition significantly increased with the increases of concentrations of AgNPs in all pathogenic bacterial species except in the case of S. epidermidis at 50%, S. aerogenes and A. hydrophila at 70%, while in case of AuNPs antibacterial activity was displayed only against B. subtilis at 20% and 100% concentration.Conclusion: This study suggests that AgNPs exhibits outstanding antibacterial activity against pathogenic bacteria as compared to AuNPs synthesized from Hibiscus Rosa sinensis leaf extract and insights to their potential applicability as an alternative antibacterial agent in microbial and human health system to reduce the resistance ability of pathogenic bacteria. Keywords: silver nanoparticles; gold nanoparticles; UV–VIS spectroscopy; FTIR; TEM; antibacterial activities.