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Study Data from Tsinghua University Update Knowledge of Scleroproteins (A hydrogen peroxide biosensor with high stability based on...

August 6, 2014



Study Data from Tsinghua University Update Knowledge of Scleroproteins (A hydrogen peroxide biosensor with high stability based on gelatin-multiwalled carbon nanotubes modified glassy carbon electrode)

By a News Reporter-Staff News Editor at Biotech Week -- Fresh data on Proteins are presented in a new report. According to news originating from Beijing, People's Republic of China, by NewsRx correspondents, research stated, "A biosensor with high stability was prepared to determine hydrogen peroxide (H2O2). This hydrogen peroxide biosensor was obtained by modifying glassy carbon electrode (GCE) with a composite film composed of gelatin-multiwalled carbon nanotubes."

Our news journalists obtained a quote from the research from Tsinghua University, "Catalase (Cat) was covalently immobilized into gelatin-multiwalled carbon nanotubes modified GCE through the well-known glutaraldehyde (GAD) chemistry in order to enhance the stability of electrodes. The enzyme sensor can achieve direct electrochemical response of hydrogen peroxide. The cyclic voltammograms at different scan rates, electrochemical impedance spectroscopy (EIS), and scanning electron microscope (SEM) tests indicate that the enzyme sensor performs positively on increasing permeability, reducing the electron transfer resistance, and improving the electrode performance. The linear response of standard curve for H2O2 is in the range of 0.2 to 5.0 mM with a correlation coefficient of 0.9972, and the detection limit of 0.001 mM. A high operational and storage stability is demonstrated for the biosensor."

According to the news editors, the research concluded: "The peak potential at room temperature in two consecutive weeks stays almost consistent, and the enzyme activity is kept stable even after 30 days in further study."

For more information on this research see: A hydrogen peroxide biosensor with high stability based on gelatin-multiwalled carbon nanotubes modified glassy carbon electrode. Journal of Solid State Electrochemistry, 2014;18(7):1981-1987. Journal of Solid State Electrochemistry can be contacted at: Springer, 233 Spring St, New York, NY 10013, USA. (Springer - www.springer.com; Journal of Solid State Electrochemistry - www.springerlink.com/content/1432-8488/)

The news correspondents report that additional information may be obtained from Y.L. Wang, Tsinghua Univ, Dept. of Chem, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, People's Republic of China. Additional authors for this research include T.Y. Li, W.J. Zhang and Y.Q. Huang (see also Proteins).

Keywords for this news article include: Asia, Gases, Anions, Beijing, Gelatin, Elements, Chemistry, Biosensing, Fullerenes, Electrolytes, Bioengineering, Scleroproteins, Electrochemical, Bionanotechnology, Hydrogen Peroxide, Nanobiotechnology, Inorganic Chemicals, Emerging Technologies, Reactive Oxygen Species, 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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