By a News Reporter-Staff News Editor at Life Science Weekly -- New research on Nanoparticles is the subject of a report. According to news reporting out of Karaj, Iran, by NewsRx editors, research stated, "The purpose of this study was to investigate the antibacterial effect of silver nanoparticles in chitosan-poly(ethylene glycol) suspension. The silver nanoparticles (AgNPs) were prepared by use of an environmentally benign method from chitosan (Cts) and poly(ethylene glycol) (PEG) at moderate temperature and with stirring for different times."
Our news journalists obtained a quote from the research from Materials and Energy Research Center, "Silver nitrate (AgNO3) was used as the metal precursor and Cts and PEG were used as solid support and polymeric stabilizer, respectively. The antibacterial activity of silver-chitosan-poly(ethylene glycol) nanocomposites (Ag-Cts-PEG NCs) against Staphylococcus aureus, Micrococcus luteum, Pseudomonas aeruginosa, and Escherichia coli was tested by use of the Mueller-Hinton agar disk-diffusion method. Formation of AgNPs was determined by UV-visible spectroscopy; surface plasmon absorption maxima were observed at 415-430 nm in the UV-visible spectrum. The peaks in the XRD pattern confirmed that the AgNPs had a face-centered cubic structure; peaks of contaminated crystalline phases were not observed. Transmission electron microscopy (TEM) revealed that the AgNPs synthesized were spherical. The optimum stirring time for synthesis of the smallest particle size (mean diameter 5.50 nm) was 12 h. The AgNPs in Cts-PEG were effective against all the bacteria tested. Higher antibacterial activity was observed for AgNPs with smaller size. These results suggest that AgNPs can be used as an effective inhibitor of bacteria and can be used in medical applications."
According to the news editors, the research concluded: "These results also suggest that AgNPs were successfully synthesized in Cts-PEG suspension at moderate temperature with different stirring times."
For more information on this research see: Antibacterial effect of silver nanoparticles prepared in bipolymers at moderate temperature. Research on Chemical Intermediates, 2014;40(2):817-832. Research on Chemical Intermediates can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Research on Chemical Intermediates - www.springerlink.com/content/0922-6168/)
Our news journalists report that additional information may be obtained by contacting M. Bin Ahmad, Mat & Energy Res Center, Karaj 3177983634, Iran. Additional authors for this research include K. Shameli, M.Y. Tay, M.Z. Hussein and J.J. Lim (see also Nanoparticles).
Keywords for this news article include: Iran, Asia, Karaj, Alkenes, Nanotechnology, Ethylene Glycols, Emerging Technologies
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