The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper reports a step-wise protocol to immobilize corresponding antibody on gold electrodes for electrochemical measurement of Osteocalcin (Oc), a bone turnover marker, levels in human serum. To our knowledge this is the first such sensor developed for Oc measurement. The magnitude of electrochemical response current was linearly dependent on Oc concentration with an R square of 0.99. The detection...
A novel non-lithographic, contamination-free technique for the fabrication of graphene field effect transistors (GFET) is presented. The GFET was modified with C reactive protein aptamer. Iron nanoparticles were immobilized on the GFET channel surface by using an aptamer-target protein (CRP)-aptamer sandwich method. Bistability signal was obtained by backgate voltage up/down sweeping. The bistability...
Five different Nano-materials (NMs) were used for making hybrid conjugates with Protein-A (PrA), a biomolecule that binds specifically with antibodies (Abs). The choice of NMs (Gold, CdS, SrTiO3, Graphene Oxide and Polystyrene) exhibit both inorganic and organic NMs, with a wide range of electrical characteristics i.e., from metal, semiconductor to non conducting dielectric materials. The NMs-PrA...
A disposable and magnetic nanoparticles composite membrane modified screen printed carbon electrodes (SPCEs) for rapid determination of chloramphenicol (CAP) in milk has been fabricated and characterized by scanning electron microscope (SEM) and voltammetry. The reagentless amperometric immunosensor was prepared by entrapping ferrocene (Fc) and carbon nanotubes (CNTs) into Nafion (Nf) to form a composite...
This paper reports a rapid, simple and direct method for the synthesis of gold nanoparticles (AuNPs) in polypyrrole (PPy) film, which provides a biocompatible matrix for the strong adsorption of antibodies. The electrochemical synthesis of AuNPs/PPy composite on gold or carbon electrode occurs within 20 minutes, and does not involve addition of any nanoparticles or reducing agent. This method is compatible...
The direct electron transfer between electrodes and glucose oxidase (GOD) immobilized in a matrix containing zirconium dioxide nanoparticles (ZrO2) is described. The protein-nanoparticle assembly is stabilized by charged and uncharged compounds and the direct electron transfer is enhanced. The effects of different compositions on the electrochemical parameters, formal potential, surface loading, and...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.