biosensor Articles

  • Biosensors - Using DNA as a biosensor to detect contaminants in water

    Biosensor - Using DNA to detect water contamination.   ...


    By ANDalyze

  • Electrochemical biosensors for environmental monitoring

    The challenge for the monitoring of environmental hazards such as pollutants, herbicides, pesticides and toxins caused by expanding industrialisation and application of new intensive agricultural technologies is to develop efficient tools that offer precision, sensitivity, and speed and ease of operation in situ and avoid consequently risks for both human and environmental health. In this ...


    By Inderscience Publishers

  • Electrochemical synthesis of polypyrrole for biosensor application

    Polypyrrole nanowires were electrochemically synthesised on platinum electrode at ambient temperature. The potentiostatic potential was set at 0.75 V in the presence of gelatin as soft mould. The whole process only took few hundred seconds. The morphologies, chemical composition and conductivity of nanowires were evaluated by means of Scanning Electron Microscopy (SEM), Fourier Transform Infrared ...


    By Inderscience Publishers

  • Thermostable Proteins as Probe for the Design of Advanced Fluorescence Biosensors

    In this review we explore the advantages deriving from the use of either enzymes or sugar binding proteins isolated from thermophilic organisms to develop stable fluorescence biosensors. We report on a novel approach to address the consumption of the analyte by enzyme-based biosensors, namely the utilization of apo-enzymes as non-active forms of proteins which are still able to bind the ligand ...


    By Springer

  • Aptamer-based and DNAzyme-based biosensors for environmental monitoring

    Aptamers and DNAzymes are small single-stranded nucleic acids that fold into a well-defined three-dimensional structure with high specificity to various ligands, such as low-molecular-weight organic or inorganic substrates or macromolecules. Their specificity is comparable with and in certain cases even higher than those of antibodies, and they can be applied for specific detection of various ...


    By Inderscience Publishers

  • Affinity–based biosensors for heavy metal detection

    In recent years, there has been a pressing need for fast and reliable methods for environmental monitoring. Among the various pollutants, the heavy metals are some of the most harmful because these substances are non–biodegradable and retained by the ecological system. Conventional analytical techniques for heavy metals imply high cost, trained personnel and the repute that they are mostly ...


    By Inderscience Publishers

  • Development of exobiopolymer-based biosensor for detection of phosphate in water

    The present study was conducted to develop a biosensor by exploiting phosphate-binding capacity of exobiopolymer (EBP) produced by Acinetobacter sp. An environmental isolate of EBP-producing Acinetobacter sp. was subjected to transposon (Tn5) mutagenesis to overproduce EBP and afford improved phosphate selectivity. A mutant producing the highest amount of EBP with high ...


    By IWA Publishing

  • Covalently-bound organic monolayers for biosensor applications

    In this paper, we present a detailed investigation on monolayer formation with thicknesses amounting 1 nm to 3 nm on silicon and silicon nitride surfaces. Thermal and photochemical methods are successfully used to form such stable and densely backed monolayers. Further, functionalisation of these surfaces with activated esters, amine groups are also presented. Static water contact angle ...


    By Inderscience Publishers

  • Biosensor with total internal reflection imaging ellipsometry

    In order to monitor multiple protein reaction processes simultaneously, a biosensor based on imaging ellipsometry operated in the total internal reflection mode is proposed. It could be realised as an automatic analysis for protein interaction processes with real-time label-free method. Its principle and methodology as well as a demonstration for its applications are presented.Keywords: ...


    By Inderscience Publishers

  • Glucose biosensor based on platinum nanowires: a clinical study

    We describe the process of modification of the platinum (Pt) nanowire surface and subsequent immobilisation of enzyme glucose oxidase (GOx) on Pt nanowires (PtNWs) for direct glucose measurement. A cyclic voltammetry technique was used to measure electrochemical oxidation between GOx and glucose. PtNW arrays were first fabricated and then functionalised with cysteamine, which in turn acted as a ...


    By Inderscience Publishers

  • Robust on-line monitoring assay - Case Study

    Alkaline Phosphatase Enzyme Activity Measurement as a Robust on-line Monitoring Assay for Water Quality Assessment. Zina Al-Saar 4th year Intern student Avans University of Applied Science - ATGM Department Joep Appels - Supervisor and Managing Director microLAN on line Bio-monitoring System. ...


    By microLAN B.V.

  • Toward colloid-based biosensors for SNP genotyping and personalised medicine applications

    Therapeutic drugs can assist some patients, however, other individuals may exhibit no response. Furthermore, a drug that is normally considered to be safe can have toxic effects in a small proportion of the population, occasionally causing death. Many altered drug responses depend on the genetic constitution of the recipient. The analysis of specific DNA markers within the genome of an individual ...


    By Inderscience Publishers

  • Analytical simulation of interfacial DNA hybridisation for design of an optimal nanotechnology handheld biosensor

    DNA biosensors are becoming ubiquitous at current scale-level of nanotechnology; but still remain in research laboratory. The project objective is accessing feasibility for a commercial off-the-shelf optimally designed versatile handheld DNA biosensor. Therefore, thorough understandings of the principles behind design of DNA biosensor during biophysical interfacial transduction were explored. The ...


    By Inderscience Publishers

  • Microbial fuel cell-based biosensors for environmental monitoring: a review

    The microbial fuel cell (MFC) is an innovative technology that was initially designed to harness energy from organic waste using microorganisms. It is striking how many promising applications beyond energy production have been explored in recent decades. In particular, MFC-based biosensors are considered to be the next generation biosensing technology for environmental monitoring. This review ...


    By IWA Publishing

  • Fabrication of carbon-nanotube enhanced piezoelectric membrane for biosensor application

    This paper reports on a carbon-nanotube (CNT) enhanced piezoelectric membrane for the possible application as a mass sensitive biosensor. CNT possesses a hollow core and large specific surface area that could be used for bio-molecular binding. A larger number of probe molecules on the surfaces of CNT could capture more target molecules and therefore increase the detection sensitivity of the ...


    By Inderscience Publishers

  • Detection of the pesticide by functionalised quantum dots as fluorescence–based biosensor

    In this paper, we present the new results of biosensor that is made from the surface–modified quantum dots with acetylcholinesterase enzymes (AChE) for optical detection of the pesticides. The quantum dots (QDs) mentioned in this study are CdTe, CdSe/ZnS and CdSe/ZnSe/ZnS - the thick shell QDs are totally new. The results pointed out that all of the quantum dots are fit for the role of ...


    By Inderscience Publishers

  • An electrochemical DNA biosensor for trace amounts of mercury ion quantification

    In this work we report the development of an electrochemical DNA biosensor with high sensitivity for mercury ion detection. A new matrix based on gold nanoparticles (AuNPs)-glutathione (GSH)/cysteine was investigated. The interaction between DNA oligonucleotides and Hg2+ ions followed by the formation of Thymine–Hg2+–Thymine (T–Hg2+–T) structures was quantified using different ...


    By IWA Publishing

  • Electrochemical biosensor for glucose detection using zinc oxide nanotetrapods

    Wurtzite structural zinc oxide (ZnO) nanotetrapods were synthesised by a thermal evaporation method. These ZnO nanotetrapods were used for the construction of an electrochemical biosensor for detecting glucose. In the biosensor, the ZnO nanotetrapods acted as supporting materials for glucose oxidase (GOx) enzyme loading because of the large surface area to ...


    By Inderscience Publishers

  • Generation of mt:egfp transgenic zebrafish biosensor for the detection of aquatic zinc and cadmium

    Zebrafish embryo toxicity test has become a popular method for detecting the environmental pollutions. But our research showed that zebrafish embryos exhibited no visible paramorphia, malformation or mortality when exposed to heavy metals in a range above the environmental standard limits, indicating that zebrafish embryo an imprecise model in monitoring environmental heavy metals ...


    By John Wiley & Sons, Ltd.

  • Surface plasmon resonance biosensors for environmental analysis: general aspects and applications

    Interest in the development of Surface Plasmon Resonance (SPR) based biosensors for the detection and monitoring of analytes in several fields has been extensively developed in the last decade. Indeed, SPR-based biosensors demonstrate interesting potential for environmental applications, and a substantial number of studies have been reported for heavy metals, dioxins, pesticides, aromatic ...


    By Inderscience Publishers

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