Results 21 to 30 of about 7,222 (224)

Electrochemical Immunosensors and Aptasensors [PDF]

open access: yesChemosensors, 2017
The possibility to integrate biorecognition elements into electrochemical detection systems has opened the way to a new class of powerful analytical devices named electrochemical (EC) biosensors. The first EC biosensors employed enzymes as recognition elements; however this limited their application to redox enzymes and natural or artificial redox ...
Paolo Ugo (Ed.), Ligia Moretto (Ed.)
  +5 more sources

An ultrasensitive electrochemical immunosensor for CA72-4 based on a signal amplification strategy of MoS2 nanoflower-supported Au nanoparticles

open access: yesJournal of Saudi Chemical Society, 2023
Accurate detection of cancer antigen 72-4 (CA72-4), a tumor-associated glycoprotein, is of great significance for gastric cancer diagnosis and immunotherapy monitoring.
Qinghua Yan   +3 more
doaj   +1 more source

Label-free electrochemical immunosensor for highly sensitive COVID-19 spike protein detection

open access: yesSensors and Actuators Reports, 2022
The ongoing coronavirus pandemic responsible for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has rapidly increased the rate of global death and infections due to variant mutations (such as Delta and Omicron). While specifically developed
Qingfeng Zhai   +5 more
doaj   +1 more source

Bioengineered Monoclonal Antibody Chitosan–Iron Oxide Bio-Composite for Electrochemical Sensing of Mycobacterium tuberculosis Lipoprotein

open access: yesEngineering Proceedings, 2023
In this study, an electrochemical immunosensor for the detection of the 19 kDa Mycobacterium tuberculosis lipoprotein LpqH was developed using a monoclonal antibody immobilized on a chitosan-coated iron oxide bio-composite.
Resmond L. Reaño   +3 more
doaj   +1 more source

A Label-Free Electrochemical Immunosensor for CEA Detection on a Novel Signal Amplification Platform of Cu2S/Pd/CuO Nanocomposites

open access: yesFrontiers in Bioengineering and Biotechnology, 2021
Carcinoembryonic antigen (CEA) is regarded as one of the crucial tumor markers for colorectal cancer. In this study, we developed the snowflake Cu2S/Pd/CuO nanocomposite to construct an original label-free electrochemical immunosensor for the ...
Linlin Cao   +9 more
doaj   +1 more source

Electrochemical Detection of Lactobacillus Rhamnosus in Fermented Food Using Magnetic Immunosensor based on Au-Fe3O4

open access: yesInternational Journal of Electrochemical Science, 2022
This study was conducted on the preparation of a high stable and accurate magnetic NPs-based electrochemical immunosensor for the determination of probiotic Lactobacillus rhamnosus (LGG) in fermented foods.
Yin Feng   +4 more
doaj   +1 more source

An electrochemical immunosensor on a carbon nanofiber/gold nanoparticles platform for the detection of alpha-feto protein cancer biomarker

open access: yesSensing and Bio-Sensing Research, 2023
We report an alpha – fetoprotein (AFP) cancer biomarker electrochemical immunosensor detected on a carbon nanofiber (CNF) and gold nanoparticles (AuNPs) platform. Functionalised carbon nanofiber and gold nanoparticles were immobilised through drop drying
Foluke O.G. Olorundare   +7 more
doaj   +1 more source

Nanomaterials-Based Electrochemical Immunosensors [PDF]

open access: yesMicromachines, 2019
With the development of nanomaterials and sensor technology, nanomaterials-based electrochemical immunosensors have been widely employed in various fields. Nanomaterials for electrode modification are emerging one after another in order to improve the performance of electrochemical immunosensors.
Zhenguo Zhang   +3 more
openaire   +3 more sources

Recent Advances in Electrochemical Immunosensors [PDF]

open access: yesSensors, 2017
Immunosensors have experienced a very significant growth in recent years, driven by the need for fast, sensitive, portable and easy-to-use devices to detect biomarkers for clinical diagnosis or to monitor organic pollutants in natural or industrial environments. Advances in the field of signal amplification using enzymatic reactions, nanomaterials such
Benoît Piro, Steeve Reisberg
openaire   +3 more sources

A Bifunctional Nanosilver-Reduced Graphene Oxide Nanocomposite for Label-Free Electrochemical Immunosensing

open access: yesFrontiers in Chemistry, 2021
A bi-functional material based on silver nanoparticles (AgNPs)-reduced graphene oxide (rGO) composite for both electrode modification and signal generation is successfully synthesized for use in the construction of a label-free electrochemical ...
Supakeit Chanarsa   +6 more
doaj   +1 more source

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