By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Silver Nanoparticles are presented in a new report. According to news reporting out of Shaanxi, People's Republic of China, by NewsRx editors, research stated, "The silver nanoparticles (AgNps) with antibacterial and antifungal properties against a great number of bacteria and fungi may be used in form of colloidal sols or doping agents for a lot of composite materials with polymer matrix. AgNps as ecological alternative for organic biocides represent an innovative challenge for treatment of collagen and keratin based materials such as leather and furskin."
Our news journalists obtained a quote from the research from the Shaanxi University of Science and Technology, "Using an efficient and innovative electrochemical method, colloidal silver solutions (CSSs) containing up to 45 ppm Ag with AgNps smaller than 10 nm and Zeta potential values between -40 divided by -50 mV, which indicates very stable solutions, were obtained and used for treatment of leathers and furskins. Bacteriostatic and bactericidal effect of the CSSs was evaluated by measuring minimal concentration with bacteriostatic effect - MCBs and minimal concentration with bactericidal effect - MCBc against Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa. Also, the fungistatic properties were evaluated and the results were very good. Leather and furskin treated by immersion in CSSs, with a content of 820 ppm Ag for chromium-tanned, 760 ppm Ag for metal-free leathers and 160 ppm for furskin have displayed resistance against some important bacteria such as E.coli, P aeruginosa or S. aureus. The exposure of the leathers and furskins to a mix of fungi (A.niger, T.viride, P glaucum, S. brevicaulis and P variotii) has shown a good resistance after 7 days, better in the case of leathers."
According to the news editors, the research concluded: "To demonstrate the way in which AgNps are present and distributed on treated leather surface, as a result of the interaction with processed leather, and of the correlation with antimicrobial resistance, Ag content and valence state were analyzed by atomic absorption spectroscopy (AAS) and X-ray photoelectron spectroscopy (XPS)."
For more information on this research see: Antimicrobial Electrochemically Obtained Nanosilver Solutions for Leather and Furskin Treatment. Revista De Chimie, 2013;64(11):1329-1334. Revista De Chimie can be contacted at: Chiminform Data S A, Calea Plevnei Nr 139, Sector 6, Bucharest R-77131, Romania (see also Silver Nanoparticles).
Our news journalists report that additional information may be obtained by contacting A. Petica, Shaanxi Univ Sci & Technol, Inst Creat Mat Div, Xian, Shaanxi, People's Republic of China. Additional authors for this research include C. Gaidau, J. Ma, D. Simion, Q. Xu and M. Niculescu.
Keywords for this news article include: Asia, Shaanxi, Chemistry, Treatment, Nanosilver, Nanotechnology, Electrochemical, Silver Nanoparticles, Emerging Technologies, People's Republic of China
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