News Column

Researchers from Zhejiang University Report Findings in Escherichia Coli

June 18, 2014



By a News Reporter-Staff News Editor at Biotech Week -- New research on Proteobacteria is the subject of a report. According to news reporting out of Hangzhou, People's Republic of China, by NewsRx editors, research stated, "The development of cost-effective, robust, and rugged biosensing devices is of great interest for point-of-care testing and on-site monitoring. Here we report a facile approach to building high-performance disposable impedance biosensors for sensitive and selective determination of Escherichia coli O157:H7."

Our news journalists obtained a quote from the research from Zhejiang University, "Gold nanoparticles and graphene modified screen-printed carbon as the electrode substrate were employed in this impedance biosensor. The immobilization of anti-E. coli O157:H7 antibodies on the electrode surface was performed by simple physical adsorption. Electrochemical impedance spectroscopy was used to detect E. coli O157:H7 captured on the disposable biosensor. Results showed that the developed immunosensor possesses excellent sensing performance, such as wide linear range (1.5 x 10(3) to 1.5 x 10(7) cfu mL(-1)), low detection limit (1.5 x 10(3) cfu mL(-1)), and excellent specificity (no significant interference from E. coli DH 5 alpha, Staphylococcus aureus, or Listeria monocytogenes)."

According to the news editors, the research concluded: "The strategy of structurally integrating metal nanomaterials, graphene, and screen-printed electrodes provides new insight into the design of disposable and high-performance immunosensors for routine sensing applications."

For more information on this research see: Development Of A Disposable Impedance Biosensor And Its Application For Determination Of Escherichia Coli O157:h7. Transactions of the ASABE, 2014;57(2):585-592. Transactions of the ASABE can be contacted at: Amer Soc Agricultural & Biological Engineers, 2950 Niles Rd, St Joseph, MI 49085-9659, USA (see also Proteobacteria).

Our news journalists report that additional information may be obtained by contacting Y.X. Wang, Zhejiang University, Coll Biosyst Engn & Food Sci, Hangzhou 310003, Zhejiang, People's Republic of China. Additional authors for this research include Z.Z. Ye and Y.B. Ying.

Keywords for this news article include: Asia, Hangzhou, Biosensing, Bioengineering, Escherichia coli, Bionanotechnology, Nanobiotechnology, Enterobacteriaceae, Gammaproteobacteria, Gram-Negative Bacteria, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Biotech Week


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