ENGINEERING RESEARCH PAPERS

biosensor research papers



A biosensor that uses ion-channel switches
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Biosensors are molecular sensors that combine a biological recognition mechanism with a physical transduction technique. They provide a new class of inexpensive, portable instrument that permit sophisticated analytical measurements to be undertaken rapidly at

Improving biosensor analysis
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The quality of optical biosensor data must be improved in order to characterize the mechanism and rate constants associated with molecular interactions. Many of the artifacts associated with binding data can be minimized or eliminated by designing the experiment

A feasibility study of a capacitive biosensor for direct detection of DNA hybridization
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Abstract This preliminary study was performed to prove the feasibility of a direct capacitive DNA biosensor for detection of nucleic acids. Two different methods for immobilization of the oligonucleotide probes were used. The first type of sensor was composed of a gold rod

Biosensor chip mass spectrometry: a chip-based proteomics approach
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Rapid advances in genomic sequencing, bioinformatics, and analytical instrumentation have created the field of proteomics, which at present is based largely on two-dimensional electrophoresis (2-DE) separation of complex protein mixtures and identification of

Cholesterol biosensor based on rf sputtered zinc oxide nanoporous thin film
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Cholesterol oxidase (ChOx) has been immobilized onto zinc oxide (ZnO) nanoporous thin films grown on gold surface. A preferred c-axis oriented ZnO thin film with porous surface morphology has been fabricated by rf sputtering under high pressure. Optical studies and

Conducting polymers with confined dimensions: Track-etch membranes for amperometricbiosensor applications
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The increasing demand for the detection of ions and molecules has led to increased research efforts in the area of biosensors, as these are characterized by an excellent sensitivity and selectivity towards the substance of interest.[1] These sensors involve

An oxygen-insensitive reagentless glucose biosensor based on osmium-complex modified polypyrrole
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Abstract An optimized material for the development of reagentless oxygen-independent biosensors based on conducting polymers is described. Considering the prerequisites for a fast electron transfer between a redox enzyme and the electrode surface via an electron-

Electrochemical biosensor for the detection of interaction between arsenic trioxide and DNA based on guanine signal
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Abstract The interaction of arsenic trioxide (As2O3) with calf thymus double-stranded DNA (dsDNA), calf thymus single stranded DNA (ssDNA) and also 17-mer short oligonucleotide (Probe A) was studied electrochemically by using differential pulse voltammetry (DPV)

Remote biosensor for in-situ monitoring of organophosphate nerve agents
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Abstract A remote electrochemical biosensor for field monitoring of organophosphate nerve agents is described. The new sensor relies on the coupling of the effective biocatalytic action of organophosphorus hydrolase (OPH) with a submersible amperometric probe design.

Graded-bandgap quantum-dot-modified nanotubes: A sensitive biosensor for enhanced detection of DNA hybridization
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Biosensors containing quantum dots (QDs) as fluorescent markers have been employed for immunoassays, gene expression, genomic analysis, and fluorescence imaging [1] because QDs have superior properties to traditional organic fluorophores, such as higher quantum

A sensitive photosystem II-based biosensor for detection of a class of herbicides
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Abstract: We have developed a biosensor for the detection of residual triazine-, urea-and phenolic-type herbicides, using isolated photosystem II (PSII) particles from the thermophilic cyanobacterium, Synechococcus elongatus, as biosensing elements. The herbicide

A biosensor for the detection of triazine and phenylurea herbicides designed using Photosystem II coupled to a screen-printed electrode
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Abstract: A biosensor for the detection of triazine-and phenylurea-type herbicides was constructed using isolated Photosystem II (PS II) complexes as a biosensing element. PSII isolated from the thermophilic cyanobacterium Synechococcus elongatus was

Carbon nanotubes-based amperometric cholesterol biosensor fabricated through layer-by-layer technique
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Abstract A carbon nanotubes-based amperometric cholesterol biosensor has been fabricated through layer-by-layer (LBL) deposition of a cationic polyelectrolyte (PDDA, poly ( diallyldimethylammonium chloride)) and cholesterol oxidase (ChOx) on multi-walled

Survey of the year 2005 commercial optical biosensor literature
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We identified 1113 articles (103 reviews, 1010 primary research articles) published in 2005 that describe experiments performed using commercially available optical biosensors. While this number of publications is impressive, we find that the quality of the biosensor work in

An amperometric enzyme biosensor fabricated from polyaniline nanoparticles
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Abstract The biosensor described here uses a novel aqueous-based nanoparticulate polyaniline (PANI), doped with dodecylbenzenesulfonic acid (DBSA). The nanoparticles were applied to a glassy carbon electrode surface by electrodeposition techniques, and

Impedance labelless detection-based polypyrrole DNA biosensor
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1. Abstract 2. Introduction 3. Materials and Methods 3.1. Materials and solutions 3.2. Apparatus 3.3. Experimental procedure 4. Result and discussion 4.1. Impedance detection of DNA hybridization 4.2. Electrolyte effects on DNA hybridization 4.3. Specificity of

Impedance labelless detection-based polypyrrole protein biosensor
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1. Abstract 2. Introduction 3. Materials and Methods 3.1. Materials and solutions 3.2. Apparatus 3.3. Experimental procedure 4. Result and discussion 4.1. Impedance detection of Ab-Ag (antibody-antigen) interactions 4.2. Data processing for S/N (signal to noise) ratio

A suggestion of electrochemical biosensor for study of platinum (II)-DNA interactions
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Abstract As a consequence of the employment of platinum based cytostatic drugs in tumor diseases treatment, it became necessary not only to detect them in biological samples but also to determine and study the Pt-DNA adducts, which is highly important during

A potentiometric microbial biosensor for direct determination of organophosphate nerve agents
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Abstract An easy to construct and inexpensive potentiometric microbial biosensor for the direct measurement of organophosphate (OP) nerve agents was developed. The biological sensing element of this biosensor was recombinant Escherichia coli cells containing the

A composite clay glucose biosensor based on an electrically connected HRP
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Abstract A novel bienzyme electrode based on a redox clay matrix is described for the cathodic detection of glucose. Peroxidase (HRP) was immobilized in clay matrix containing graphite particles. In order to electrically connect the immobilized HRP,

Biosensor systems in standard CMOS processes: fact or fiction
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Abstract:In this paper, we discuss the advantages and limitations of using standard complementary metal–oxide–semiconductor (CMOS) fabrication processes for the design of integrated affinity-based biosensor systems. In particular, we examine the compatibility of

Glucose biosensor based on MWCNTs-Gold nanoparticles in a Nafion film on the glassy carbon electrode using flow injection FFT continuous cyclic
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A new glucose electrochemical biosensor was designed using a flow injection system. Glucose oxidase (GOx), as a sensing material, was immobilized on to the modified surface of a glassy carbon electrode using nafion polymeric matrix. Gold nanoparticles (AuNPs)

Indicator-free electrochemical DNA biosensor based on adenine and guanine signals
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Abstract A novel electrochemical hybridization biosensor protocol without using an external indicator is described. The oxidation signals of adenine and guanine from calf thymus double-stranded DNA (dsDNA) and calf thymus singlestranded DNA (ssDNA) was studied

Determination of heavy metal ions using conductometric biosensor based on sol-gel-immobilized urease
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Heavy-metal ions are ubiquitous in nature, thus resulting in a serious environmental problem. Due to their high toxicity, there is an obvious need to determine them rapidly on site at trace levels. Although the typical detection methods such as atomic absorption

Magnetoimpedance biosensor for Fe3O4 nanoparticle intracellular uptake evaluation
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Iron oxide (Fe3O4) nonspecific nanoparticles of 30 nm are embedded inside human embryonic kidney (HEK 293) cells by intracellular uptake with a concentration of 105 particles/cell. An amorphous ribbon of Co64. 5Fe2. 5Cr3Si15B15 exhibiting large

Label-free detection of biomolecules by a field-effect transistor microarray biosensor with bio-functionalized gate surfaces
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Abstract The aim of this work was to bio-functionalize the SiO2 gate of ion-sensitive field- effect transistor (ISFET) to covalent bind DNA sequences via a series of chemical reactions. On the modified surface, the detection of the DNA hybridization and in particular single

Microwave dielectric resonator biosensor for aqueous glucose solution
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We report a near-field microwave biosensor based on a dielectric resonator to detect glucose concentration. A microwave biosensor with a high Q dielectric resonator allows observation of the small variation of the glucose concentration by measuring the shift of

A review on glucose and hydrogen peroxide biosensor based on modified electrode included silver nanoparticles
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To modification of electrochemical biosensors greatly approaches have been done based on Ag nanoparticles (AgNPs) included electrode. In this review we will focus on production, classification and application of AgNPs toward glucose and hydrogen peroxide

Compact label-free biosensor using VCSEL-based measurement system
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Abstract:We report an ultracompact label-free biosensor that uses a vertical-cavity surface- emitting laser (VCSEL)-based measurement system for the characterization of biomolecular interactions. It consists of a VCSEL, a plastic guided-mode resonant filter, and two pin

A novel acetylcholinesterase biosensor based on chitosan-gold nanoparticles film for determination of monocrotophos using FFT continuous cyclic voltammetry
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In this paper, a new flow injection enzymatic acetylcholinesterase (AChE) biosensor was designed for selective determination of monocrotophos (an organophosphate pesticide). The biosensor was constructed by modifying glassy carbon electrode surface with gold

Detection of low levels of Listeria monocytogenes within 20 hours using an evanescent wave biosensor
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BY T. BRYAN TIMS, SONJA S. DICKEY, DANIEL R. DEMARCO, AND DANIEL V. LIM we re added to glass capillary tubes to form a re action chamber and were incubated overnight at 4 C with 100 µg/mL streptavidin. The waveguides were rinsed with 5 mL PBS-Tween 20.

Enhancing sensitivity of a whispering gallery mode biosensor by subwavelength confinement
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The authors demonstrate enhanced sensitivity of a spherical whispering gallery mode biosensor WGMB by confining orbiting light near the surface using a subwavelength sub- high refractive index layer on a fluorine doped silica microsphere radius R 200 m. Their

Ligand loading at the surface of an optical biosensor and its effect upon the kinetics of protein-protein interactions
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Molecular recognition between biomolecules is fundamental to an understanding of their biological function. Most conventional methods for characterizing biomolecular interactions provide only a measure of the dissociation equilibrium constant KD (Stanley et al., 1983),

Total protein measurement using a fiber-optic evanescent wave-based biosensor
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A novel method and instrumental system to determine the total protein concentration in a liquid sample is described. It uses a fiber optic total protein sensor (FOPS) based on the principles of fiber optic evanescent wave spectroscopy. The FOPS applies a dye-

Examination of the electroanalytic performance of carbon nanotube (CNT) modified carbon paste electrodes as xanthine biosensor transducers
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The effect of multi-walled carbon nanotube (MWCNT) and single-wall carbon nanotube (SWCNT) on carbon paste electrode (CPE) electrochemical response was examined by introducing various portions of CNT into the CPE. The optimum electrode structure was

A label-free biosensor based on silver nanoparticles array for clinical detection of serum p53 in head and neck squamous cell carcinoma
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Abstract: By using triangular silver (Ag) nanoparticle array, a localized surface plasmon resonance (LSPR) nanosensor was fabricated and shown to sense serum p53 protein in vitro, which is involved in head and neck squamous cell carcinoma (HNSCC). The

A direct, multiplex biosensor platform for pathogen detection based on cross-linked polydiacetylene (PDA) supramolecules
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Polydiacetylene (PDA) has been in the recent limelight as a material for sensors because of its special features that allow optical transduction of sensory signals and its inherent simplicity and ease of use in supramolecular chemistry. PDA supramolecules are built

Coil-type implantable glucose biosensor with excess enzyme loading
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1. Abstract 2. Introduction 3. Materials and Methods 3.1. Apparatus 3.2. Reagents 3.3. Preparation of glucose biosensors 3.3. 1. Pt wire coiling 3.3. 2. Enzyme immobilization 3.3. 3. Outer membrane coating 3.3. 4. Measurement methods 4. Results and discussion 4.1.

Assembly of laccase over platinum oxide surface and application as an amperometricbiosensor
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Laccase could be successfully assembled on an amine-derivatized platinum electrode by glutaraldehyde coupling. The enzyme layer formed on the surface does not communicate electron directly with the electrode, but the enzymatic activity of the surface could be

Determination of sulfamethazine in milk by biosensor immunoassay
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A biosensor based on surface plasmon resonance (SPR) measurement was developed for use in an immunoassay for detection of sulfamethazine (SMZ) in milk. The biospecific surface was a carboxymethyl dextran-modified gold-surface sensor chip to which SMZ

Specific determination of hydrogen peroxide with a catalase biosensor based on mercury thin film electrodes
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A biosensor for specific determination of hydrogen peroxide was developed using catalase (EC 1.11. 1.6) in combination with a mercury film electrode. Catalase was immobilized with gelatine by means of glutaraldehyde on the electrode surface. The biosensor response

DNA biosensor for Microcystis spp. sequence detection by using methylene blue and ruthenium complex as electrochemical hybridization labels
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An electrochemical biosensor for the voltammetric detection of DNA sequences related to the bloomforming genera of cyanobacteria, Microcystis spp., is described. A specific DNA probe is designed based on sequence polymorphism within the 16S ribosomal DNA (

Biosensor based on xanthine oxidase for monitoring hypoxanthine in fish meat
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Abstract: An amperometric enzyme electrode for the detection of hypoxanthine in fish meat is described. The hypoxanthine sensor was prepared from xanthine oxidase immobilized by covalent binding with glutaraldehyde and bovine serum albumin on a nafion-coated

Enzyme biosensor for determination of organophosphates
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Abstract: A potentiometric enzyme biosensor for the direct measurement of organophosphate pesticides was developed. The basic element of this enzyme biosensor was a pH electrode modified with an immobilized organophosphorus hydrolase layer

A biosensor for direct detection of DNA sequences based on capacitance measurements
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Abstract The large demand for DNA analysis calls for the development of portable, low-cost, easy-to-perform assays. We developed and performed preliminary assessments of an integrable biosensor for the direct detection of DNA sequences through capacitance

Cholesterol biosensor based on MWCNTs-MnO2 nanoparticles using FFT continuous cyclic voltammetry
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A new electrochemical biosensor was designed for the cholesterol determination based on nanomaterials. Cholesterol oxidase was immobilized on to the MnO2 nanoparticles and Multiwall cabon-nanotubes (MWCNTs) which they were placed on a glassy carbon

Immobilization of malate dehydrogenase on carbon nanotubes for development of malatebiosensor
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Abstract An amperometric malic acid biosensor was developed by immobilizing malate dehydrogenase on multi-walled carbon nanotubes (MWCNT) coated on screen printed carbon electrode. The screen printed carbon electrode is made up of three electrodes viz.,

Detection of human interleukine-2 gene using a label-free electrochemical DNA hybridizationbiosensor on the basis of a non-inosine substituted probe
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Abstract The human interleukine-2 gene (hIL-2) is detected with a label-free DNA hybridization biosensor using a non-inosine substituted probe. The sensor relies on the immobilization of a 20-mer antisense single strand oligonucleotide (chIL-2) related to the

SU-8 micro-biosensor based on Mach-Zehnder interferometer
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Abstract. In this paper design, simulations and preliminary experimental results for an optical biosensor, using a Mach-Zehnder interferometer as basic configuration, are presented. This type of sensor offered a lot of advantages such as compactness, real time analysis, low

Development of a rapid single-drop analysis biosensor for screening of phenanthrene in water samples
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Abstract Detection techniques for biosensors often require bulky instruments or cells that are not feasible for in-field analysis. Our single-drop cell design, optimised in this work, comprised a screen-printed three-electrode (SPE), strip in horizontal position onto which a

Active concentration measurements of recombinant biomolecules using biosensortechnology
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Whereas the concentration of a biomolecule simply refers to the amount of chemical substance per unit of volume, its active concentration refers to a relational parameter that has meaning only with respect to the molecule's ability to interact specifically with one

Raptor: A portable, automated biosensor
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The RAPTOR is a portable automated fiber optic biosensor for detection of biological threat agents. It performs rapid (3 to 10 minute), fluorescent sandwich immunoassays on the target analytes simultaneously.

A biosensor approach to probe the structure and function of the adsorbed proteins: fibrinogen at the gold surface
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Abstract. The kinetics of adsorption and surface structure of adsorbed layers of the human fibrinogen on the gold surface, determined by Surface Plasmon Resonance (SPR) and Atomic Force Microscopy (AFM) analysis, was employed to probe the lateral distribution

High sensitivity glucose biosensor based on Pt electrodeposition onto low-density aligned carbon nanotubes
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Using carbon nanotubes (CNTs) as a substrate for initial Pt coating and subsequent glucose oxidase (GOD) immobilization to detect glucose was reported. The influence of both the orientation and the density of CNTs on the electronic properties and glucose detection

Chitosan-g-polyaniline: a creatine amidinohydrolase immobilization matrix for creatinebiosensor
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Abstract. A novel matrix composed of chitosan-graft-polyaniline (CHIT-g-PANI) was electrochemically prepared to investigate the immobilization of creatine amidinohydrolase (CAH). CAH enzyme was covalently immobilized with the CHIT-g-PANI matrix using

Yeast as a biosensor for antioxidants: simple growth tests employing a Saccharomyces cerevisiae mutant defective in superoxide dismutase
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Mutants of Saccharomyces cerevisiae devoid of Cu, Zn-superoxide dismutase are hypersensitive to a range of oxidants, hyperbaric oxygen and hyperosmotic media, show lysine and methionine auxotrophy when grown under the atmosphere of air and have a

Glucose biosensor based on platinum nanoparticles supported sulfonated-carbon nanotubes modified glassy carbon electrode
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Highly dispersed Pt nanoparticles supported on sulfonated multiwalled carbon nanotubes (Pt/sulfonated-MWCNTs) were used to modify glassy carbon (GC) electrode and then glucose oxidase was immobilized on the Pt/sulfonated-MWCNTs/GC electrode to

Amperometric biosensor for D-lactate assay
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Summary A carbon paste electrode biosensor for D-lactic acid analysis in biological samples was developed. D-lactate cytochrome c oxidoreductase from baker's yeast (EC 1.1. 2.4) was used as biorecognition element of the electrode in combination with phenazine

A glucose biosensor based on nanographene and ZnO nanoparticles using FFT continuous cyclic voltammetry
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In this work, a new glucose electrochemical biosensor was made based on immobilization of glucose oxidase (GOx) on zinc oxide nanoparticles (ZnO NPs) doped in nanographene (NGs) sheets. A glassy carbon electrode was used as a transducer of the biosensor and

Bismuth oxide nanoparticles/chitosan/modified electrode as biosensor for DNA hybridization
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An electrochemical DNA biosensor based on nanoparticles bismuth oxide Bi2O3 for DNA immobilization and hybridization detection is presented. The nano Bi2O3/chitosan-modified gold electrode (AuE) was fabricated and oligonucleotides were immobilized onto the AuE

Current biosensor technologies in drug discovery
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Over the past two decades the benefits of biosensor analysis have begun to make an impact in the market, and systems are beginning to be used as mainstream research tools in many laboratories1, 2. Biosensors are devices that use biological or chemical receptors to

Amperometric biosensor for glucose based on a nanometer-sized microband gold electrode coimmobilized with glucose oxidase and poly (o-
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Abstract A nanometer-sized (88mm) microband gold electrode for glucose detection is described. These noble metal ultramicrosensors are prepared by electrochemical copolymerization of o-phenylenediamide (PDA) and glucose oxidase at the nanometer-

Detection of dopamine based on tyrosinase-Fe3O4 nanoparticles-chitosan nanocompositebiosensor
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Abstract A tyrosinase biosensor based on Fe3O4-chitosan nanocomposite has been developed for the amperometric detection of dopamine by the biocatalytically liberated dopaquinone at- 0.25 V vs. saturated calomel electrode. The obtained bio-nanoparticles,

Amperometric and impedimetric H2O2 biosensor based on horseradish peroxidase covalently immobilized at ruthenium oxide nanoparticles modified electrode
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In this work, Ruthenium oxide nanoparticles (RuNPs) were electrochemically deposited on a glassy carbon electrode (GCE) surface using RuCl3. nH2O as a precursor. The model redox enzyme, horseradish peroxidase (HRP) was covalently immobilized at the RuNPs

The application of electrodeposited poly (propylene imine) dendrimer as an immobilisation layer in a simple electrochemical DNA biosensor
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We describe the application of poly (propylene imine) dendrimer in the preparation of a simple DNA biosensor. Generation one PPI was electrodeposited via cyclic voltammetry on glassy carbon electrode using a potential range of-100 to 1100 mV for 10 cycles at 50 mV/

Application of toxicity monitor using nitrifying bacteria biosensor to sewerage systems
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ABSTRACT Toxic substances may be included in wastewater influent and can damage biological processing of wastewater treatment, therefore continuous toxic-monitoring of wastewater influent is needed. This paper describes the potential toxic-monitoring

A disposable biosensor based on immobilization of laccase with silica spheres on the MWCNTs-doped screen-printed electrode
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Abstract Background: Biosensors have attracted increasing attention as reliable analytical instruments in in situ monitoring of public health and environmental pollution. For enzyme- based biosensors, the stabilization of enzymatic activity on the biological recognition

A novel nanostructured biosensor for the detection of the dust mite antigen Der p2
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The group 2 allergen, Der p2, has been reported to activate innate toll-like receptors (TLRs) on respiratory epithelial cells and thus aggravate respiratory diseases. In this study, a highly sensitive nanostructured biosensor based on a 3D sensing element with uniformly

Hydrogen peroxide biosensor based on the bioelectrocatalysis of myoglobin incorporated in multi-walled carbon nanotubes/chitosan composite film
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Myoglobin/multi-walled carbon nanotubes/chitosan film (Mb/MWNTs/Cs) electrodes were fabricated based on cross-linking myoglobin (Mb) with multi-walled carbon nanotubes/chitosan (MWNTs/Cs) composite film coated on a glassy carbon electrode (

Performance of nanopolyaniline-fungal enzyme based biosensor for water pollution
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ABSTRACT The Laccases are oxidoreductases belonging to the multinuclear copper- containing oxidases; they catalyse the monoelectronic oxidation of substrates at the expense of molecular oxygen. These essentially ecofriendly enzymes work with air and

A penicillamine biosensor based on tyrosinase immobilized on nano-Au/PAMAM dendrimer modified gold electrode
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Abstract Gold electrodes were modified with submonolayers of 3-mercaptopropionic acid and further reacted with poly (amidoamine)(PAMAM) dendrimers to obtain thin films. The high affinity of PAMAM dendrimer for nano-Au with its amine groups was used to realize

Glucose Biosensor Based on Highly Dispersed Au Nanoparticles Supported on Palladium Nanowire Arrays
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A glucose biosensor was constructed by using highly dispersed gold nanoparticles supported on palladium nanowire arrays (Au-PdNWs) as sensing interface. The property of the biosensor was detected by cyclic voltammetry and chronoamperometry and the use of

Hydrogen Peroxide Biosensor Based on Hemoglobin Immobilization on Gold Nanoparticle in FFT Continuous Cyclic Voltammetry Flow Injection System
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A novel biosensor was designed for selective determination of hydrogen peroxide in flow injection analysis (FIA) system. The FIA measurement was based on fast Fourier transformation continuous cyclic voltammetry (FFTCCV) detection method in which the

Glucose biosensor based on chitosan-gold and Prussian blue-gold nanoparticles
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Abstract: Amperometric glucose biosensors were constructed by codeposition of glucose oxidase (GOx) with chitosangold (chitosan-AuNP) on gold-Prussian Blue (Au-PB) nanoparticles modified glassy carbon electrodes (GCE). The high stability of the

Quantitative immunochromatographic strip biosensor for the detection of carcinoembryonic antigen tumor biomarker in human plasma
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Abstract Combining the unique optical properties of gold nanoparticle (Au-NP) and the antibody-antigen specific molecular recognition, a quantitative immunochromatographic strip biosensor (QISB) in connection with a portable strip reader was developed for the

Conductometric biosensor based on whole-cell microalgae for assessment of heavy metals in wastewater
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Whole-cell Chlorella vulgaris conductometric biosensors consisting of gold planar interdigitated electrodes and sol-gel algal membranes have been used for assessment of heavy-metal ions in water. These analytes act as algal alkaline phosphatase inhibitors.

Flow Injection Phosphate Biosensor Based on PyOx-MWCNTs Film on a Glassy Carbon Electrode Using FFT Continuous Cyclic Voltammetry
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A new flow injection enzymatic biosensor was designed for selective determination of phosphate ions. Pyruvate oxidase (PyOX) and multiwall cabon nanotubes (MWCNTs) were immobilized on the surface of a glassy carbon electrode by the nafion polymeric layer. The

Organic phase amperometric biosensor for detection of pesticides
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Abstract A rapid, simple, and sensitive acetylcholinesterase (AChE) amperometric biosensor for direct measurement of organophosphorus compounds (OPCs) in organic solvent was developed. The biosensors were based on a graphite electrode and on thiocholine-

Dopamine determination with a biosensor based on catalase and modified carbon paste electrode with zinc oxide nanoparticles
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Determination level of dopamine (DA) is very important in medicine and disease diagnostic. In presented research, a biosensor designed based on catalase (CAT) and modified carbon paste electrode (CPE) with zinc oxide (ZnO) nanoparticles for Determination level of

BIOSENSORS IN ENVIRONMENTAL APPLICATIONS



Biosensors, nanosensors and biochips: frontiers in environmental and medical diagnostics
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ABSTRACT This presentation describes three areas of research related to the development of biosensors, nanosensors and biochips for chemical, biological and medical analysis:(1) nanostructured plasmonics-based probes for surface-enhanced Raman scattering (SERS) The First Workshop on Evaluation/Validation of Novel Biosensors in Real Environment and Food Samples was organised by the Concerted Action of the same name funded by the Quality of Life and Management of Living Resources Programme of the European Union. It was

Preliminary studies for the use of bioluminescent bacteria in the development of wirelessbiosensors for environmental monitoring
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In the last decades the European countries increased the policies related to environmental pollution, in order to improve water quality and people health. To date, environmental monitoring is mainly based on spot-sampling, or on the assessment of certain

Application of bioassays/biosensors for the analysis of pharmaceuticals in environmental samples
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Pharmaceuticals are diverse groups of chemically active compounds used in humans, animals and plants for the treatment or prevention of different diseases. They include human and veterinary drugs, such as antibiotics, hormones, analgesics, cytostatics and b-

Biosensors for Contaminants Monitoring in Food and Environment for Human andEnvironmental Health
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Environmental security is one of the fundamental requirements of our well-being. However, it still remains a major global challenge, on account of the increasing number of potentially harmful pollutants (chemical compounds, toxins and pathogens) discharges into the

Applications of commercial biosensors in clinical, food, environmental
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27 The lack of specific, low-cost, rapid, sensitive, and easy detection of biomolecules has resulted in the 28 development of biosensor technology. Innovations in biosensor technology have enabled many biosen-29 sors to be commercialized and have enabled The lecture of Professor R. Durst (USA) was devoted to the use of liposomes for detecting toxic chemical compounds, natural toxins, and pathogenic microorganisms. Liposomes are used as carriers of either dyes or electrochemically active agents. The liposome content is

RECENT ADVANCES IN ENVIRONMENTAL CHEMICAL SENSORS AND BIOSENSORS Session 1 Organized by
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Since the dawn of chemical sensors, there were high hopes of rapid and widespread utilization of these devices. This predicted success, however, has not yet been achieved, due to several causes:(bio) chemical fouling of the sensor, unstability in the sensor signal

Biosensors for environmental applications
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The high cost and slow turnaround times typically associated with the measurement of regulated pollutants clearly indicates a need for environmental screening and monitoring methods which are fast, portable, and cost-effective. To meet this need, a variety of field

Biosensors for Environmental Applications
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The increasing number of potentially harmful pollutants in the environment calls for fast and cost-effective analytical techniques to be used in extensive monitoring programs. Additionally, over the last few years, a growing number of initiatives and legislative actions

Biosensors for environmental applications: Future development trends
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Abstract: Biosensors can be excellent analytical tools for monitoring programs working to implement legislation. In this article, biosensors for environmental analysis and monitoring are extensively reviewed. Examples of biosensors for the most important families of

Biosensors for environmental monitoring: A global perspective
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However, a small part of all biosensors developed are commercially available, being the commercialization, the best indicator of the success of a biosensor. A list of some commercially available biosensor s for environmental applications is shown in Table 3. Some of these

Environmental applications of analytical biosensors
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Abstract. A review of the fundamental aspects and environmental applications of biosensors is presented. The bases of different transducer principles such as electrochemical, optical and piezoelectric are discussed. Various examples are given of the applications of such

A microscale NO3-biosensor for environmental applications
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A biosensor for NO3-containing immobilized dentrifying bacteria and a reservoir of liquid growth medium for the bacteria was constructed. The bacteria did not have a N2O reductase and therefore reduced NO3-to N2O, which was then subsequently quantified by a built-in Although biosensors for potential environmental-monitoring applications have been reported for a wide range of environmental pollutants, from a regulatory perspective the decision to develop a biosensor method for an environmental application should consider several

Application of conducting polymers to biosensors
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for immobilization of biomolecules and rapid electron transfer for the fabrication of efficient biosensors. polymers and their wide applications in health care, food industries, environmental monitoring etc Conduction polymer; Biosensor; Immobilization; Electron transfer; Tranducer.

Whole-cell-based biosensors for environmental biomonitoring and application
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Abstract A variety of whole-cell-based biosensors has been developed using numerous native and recombinant biosensing cells. The use of reporter genes, for example bacterial luciferase and gfp, to monitor gene expression is discussed in terms of each reporters'

Nucleic acid biosensors for environmental pollution monitoring
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as a tool in the recognition or monitoring of chemical compounds of environmental interest that on the biospecific pre-concentration of metal ions on an electrochemical DNA biosensor followed by DNA damage has also been measured using fluorescence-based biosensors. 5. Arrhenius plot of phosphate biosensor current variation with temperature. To make such biosensors useful in environmental analysis, it is necessary to improve the sequences, the employment of catalytic materials for NADH electroreduction, resulted in biosensors specific for A review of environmental applications of bioluminescence measurements. The US Environmental Protection Agency (EPA) has continuing interest in innovative technologies for environmental monitoring applications such as those provided by bioluminescence methods. European Community to set limits on their concentration in different environmental waters: the Various biosensors to detect organo- phosphorus and carbamate compounds (with high insecti Fibre optic biosensor using these enzymes as biosensing ele- ments are described by

Development and application of cell-based biosensors
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based biosensors have been implemented using microorganisms, particularly for environmental monitoring of Biosensors incorporating mammalian cells have a distinct advantage of responding in and ultimately constitute a potentially effective cell-based biosensor technology.