Showing papers in "Biosensors and Bioelectronics in 2007"

TL;DR: This review not only offers an overview of trends in the area of pathogen detection but it also describes main techniques, traditional methods, and recent developments in the field of pathogenic bacteria biosensors.

TL;DR: This review paper focuses on the progress made over the past 4 years toward the integration of sensitive SPR to lab-on-a-chip platforms and descriptions of novel SPR optical approaches and materials.

TL;DR: This review is intended to largely concentrate on and give an overview of the advances made in recent years in this area together with a discussion surrounding the practical application of biofuel cells.

TL;DR: This review provides an overview of the progress achieved in the decade between 1994 and 2005, with respect to the challenging area of MIPs for protein recognition, and furnishes a comparative analysis of different approaches developed.

TL;DR: This review focuses on the growing field of entrapment of biomolecules such as proteins, enzymes and antibodies in sol-gel matrices prepared from alkoxide precursors.

TL;DR: The inexpensive, reliable and sensitive sensing platform based on QDs/CNTs electrode provides wide potential applications in clinical, environmental, and food analysis.

TL;DR: The electrical contacting of redox enzymes with electrodes is the basis for the development of enzymatic electrodes for amperometric biosensors or biofuel cell elements and a fluorescence resonance energy transfer (FRET) assay for nucleic acids, and specifically, for analyzing telomerase activity in cancer cells are discussed.

TL;DR: The performance of the label-free electrochemical immunosensor, fabricated using microelectrode arrays modified with single-walled carbon nanotubes (SWNTs), seems promising for further clinical applications.

TL;DR: The encoded microbead is the key in providing multiplexing capability to the assay by allowing multi-analyte analysis, and this principle could be applied to microfluidic immunoassays in order to retain all the advantages of a fluidic device and significantly improve multiplexed capability.

TL;DR: An impedance biosensor based on interdigitated array microelectrode coupled with magnetic nanoparticle-antibody conjugates (MNAC) was developed and evaluated and it was observed that bulk resistance and double layer capacitance were responsible for the impedance change caused by the presence of E. coli O157:H7 on the surface of IDAM.

TL;DR: Hydquinone concentration in compost extracts was determined by laccase biosensor and HPLC, the results of the two methods were approximately the same.

TL;DR: The results from both experiment and model calculations strongly indicate the efficacy of the longitudinal surface plasmon absorption band in biosensing.

TL;DR: An electrochemical detection method for chemical sensing has been developed using a DNA aptamer immobilized gold electrode chip and the current decreased due to the interference of bound 17beta-estradiol with the electron flow produced by a redox reaction between ferrocyanide and ferricyanide.

TL;DR: The preliminary results using lytic phage as a probe for bacterial detection, in combination with SPR platform are promising and hence can be employed for rapid and label-free detection of different bacterial pathogens.

TL;DR: The glucose biosensor shows fast amperometric response (3s) with the sensitivity of 446.2nA/mM, detection limit of 24 microM and wide concentration range of 30 microM to 5mM and exhibits good stability, reproducibility and long life time.

TL;DR: Implantable, flexible polymer-based probes with embedded microelectrodes for acute and chronic neural recordings in vivo, as tested on rodents, and histological analysis showed minimal tissue reaction to the implanted structures.

TL;DR: A convenient and effective strategy for preparation nanohybrid film of multi-wall carbon nanotubes (MWNT) and gold colloidal nanoparticles (GNPs) by using proteins as linker by using hemoglobin (Hb) as model protein to fabricate third-generation H2O2 biosensor based on MWNT and GNPs.

TL;DR: The application of a rotating cathode in a river sediment microbial fuel cell increased the oxygen availability to the cathodes, and therefore improved the cathode reaction rate, resulting in a higher power production and a less negative anode potential and a higher anodic charge transfer resistance.

TL;DR: A novel amperometric glucose biosensor based on the nine layers of multilayer films composed of multi-wall carbon nanotubes, gold nanoparticles and glucose oxidase was developed and exhibited good reproducibility, long-term stability and the negligible interferences of ascorbic acid, uric acid and acetaminophen.

TL;DR: An inductive link is presented that can handle freedom of motion and the issue of patient's health and safety regarding exposure to the electromagnetic field is addressed and appliance on a living subject is made both safe and practically feasible.

TL;DR: A novel amperometric biosensor based on polypyrrole (PPy) nanotube array deposited on a Pt plated nano-porous alumina substrate and its performances are described, which contribute to increase the characteristic performances of the novel biosensor.

TL;DR: The use of poly(acrylic acid) (PAA)-multiwalled carbon-nanotubes (MWNTs) composite-coated glassy-carbon disk electrode (GCE) for the simultaneous determination of physiological level dopamine and uric acid in the presence of an excess of ascorbic acid (AA) in a pH 7.4 phosphate-buffered solution found it possible to detect lower level UA.

TL;DR: These experiments demonstrate that power density per volume for a biofilm flow reactor MFC should be calculated using the anode chamber volume alone (250W/m3), rather than with the full anolyte volume.

TL;DR: The results confirmed that the assembling process of multilayer films was simple to operate, the immobilized GOD displayed an excellent catalytic property to glucose, and GNp in the biosensing interface efficiently improved the electron transfer between analyte and electrode surface.

TL;DR: It is demonstrated that yeast cells with redox enzymes present in their outer membrane are capable of communicating directly with the electrode surface and contribute to current generation in a mediatorless biofuel cells.

TL;DR: Monitoring of the organophosphorus pesticides dichlorvos and paraoxon at very low levels has been achieved with liposome-based nano-biosensors using the enzyme acetylcholinesterase effectively stabilized within the internal nano-environment of the liposomes.

TL;DR: A label free optical biosensor based on a free-space Young interferometer configuration that is characterized by two different affinity systems: the antibody-antigen complex protein G-immunoglobulin G is used as a model system for monitoring reaction kinetics.

TL;DR: Evidence is provided that phage can be used as a recognition element in biosensors using physical adsorption method for immobilization of phage on the sensor surface and the performances of the sensors made by these technologies compare well.

TL;DR: The suitability of the proposed assay for accurate determination of the AFB1 concentration in corn samples was demonstrated, and it was indicated that the PAb could readily distinguish AFB1 from other aflatoxins, with the exception for AFG1.

TL;DR: The sol-gel-derived ceramic-carbon nanotube (SGCCN) nanocomposite film fabricated by doping multiwall carbon nanotubes into a silicate gel matrix was used to immobilize protein.