Aldehyde functionalized ionic liquid on electrochemically reduced graphene oxide as a versatile platform for covalent im...
Published in Biosensors and Bioelectronics
Recognition of bacterial lipopolysaccharide using bacteriophage-adhesin-coated long-period gratings.
Published in Biosensors & bioelectronics
In this paper we present a new type of highly sensitive label-free sensor based on long-period gratings (LPG) coated with T4 bacteriophage (phage) adhesin. The adhesin (gp37) binds Escherichia coli B (E. coli B) by recognizing its bacterial lipopolysaccharide (LPS). The LPG biofunctionalization methodology is based on coating LPG surface with nicke...
Development of paper-based color test-strip for drug detection in aquatic environment: Application to oxytetracycline.
Published in Biosensors & bioelectronics
The wide use of antibiotics in aquaculture has led to the emergence of resistant microbial species. It should be avoided/minimized by controlling the amount of drug employed in fish farming. For this purpose, the present work proposes test-strip papers aiming at the detection/semi-quantitative determination of organic drugs by visual comparison of ...
A facile label-free colorimetric aptasensor for acetamiprid based on the peroxidase-like activity of hemin-functionalize...
Published in Biosensors & bioelectronics
A facile aptasensor has been developed for the colorimetric detection of acetamiprid by using the hemin-functionalized reduced graphene oxide (hemin-rGO) composites. The as-prepared hemin-rGO composites possessed both the ability of rGO to physically adsorb the aptamers and the peroxidase-like activity of hemin that could catalyse 3,3,5,5-tetrameth...
Chemostat-like microfluidic platform for highly sensitive detection of heavy metal ions using microbial biosensors.
Published in Biosensors & bioelectronics
Reporter-gene-based microbial biosensors have high potential for detecting small molecules, including heavy metal ions (HMIs), in a sensitive and selective manner by involving low costs. However, the sensitivity and dynamic range of the sensing mechanism are largely limited by the conventional culture environment that relies on the batch-type addit...
Novel cell-based odorant sensor elements based on insect odorant receptors.
Published in Biosensors & bioelectronics
Development of cell-based odorant sensor elements combined not only high degree of sensitivity and selectivity but also long-term stability is crucial for their practical applications. Here we report the development of a novel cell-based odorant sensor element that sensitively and selectively detects odorants and displays increased fluorescent inte...
Chemiluminescence resonance energy transfer imaging on magnetic particles for single-nucleotide polymorphism detection b...
Published in Biosensors & bioelectronics
A novel ligation chain reaction (LCR) methodology for single-nucleotide polymorphism (SNP) detection was developed based on luminol-H2O2-horseradish peroxidase (HRP)-mimicking DNAzyme-fluorescein chemiluminescence resonance energy transfer (CRET) imaging on magnetic particles. For LCR, four unique target-complement probes (X and X(⁎), YG and Y(⁎)) ...
Simultaneous electrochemical immunoassay using graphene-Au grafted recombinant apoferritin-encoded metallic labels as si...
Published in Biosensors & bioelectronics
A novel electrochemical multiplexed immunoassay was designed for simultaneous determination of alpha-fetoprotein (AFP) and carcinoembryonic antigen (CEA) using recombinant apoferritin-encoded metallic nanoparticles (rApo-M) as labels and dual-template magnetic molecularly imprinted polymers (MMIPs) as capture probes. The labels were prepared by loa...
An ultra-sensitive acetylcholinesterase biosensor based on reduced graphene oxide-Au nanoparticles-β-cyclodextrin/Prussi...
Published in Biosensors & bioelectronics
This work reports a novel, ultrasensitive, and selective sensing platform based on a direct electrodeposition of electrochemical reduced graphene oxide (ERGO)-Au nanoparticles (AuNPs)-β-cyclodextrin (β-CD) and Prussian blue-chitosan (PB-CS) on glass carbon electrode (GCE) for efficiently fixed acetylcholinesterase (AChE) to fabricate organophosphor...
High-frequency phase shift measurement greatly enhances the sensitivity of QCM immunosensors.
Published in Biosensors & bioelectronics
In spite of being widely used for in liquid biosensing applications, sensitivity improvement of conventional (5-20MHz) quartz crystal microbalance (QCM) sensors remains an unsolved challenging task. With the help of a new electronic characterization approach based on phase change measurements at a constant fixed frequency, a highly sensitive and ve...
