Articles with "electrochemical aptasensor" as a keyword



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An electrochemical aptasensor for detection of prostate‐specific antigen‐based on carbon quantum dots‐gold nanoparticles

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Published in 2022 at "Biotechnology and Applied Biochemistry"

DOI: 10.1002/bab.2340

Abstract: In this work, an electrochemical aptasensor was described for the determination of prostate‐specific antigen (PSA). Aptamer chains were decorated on the surface of a glassy carbon electrode (GCE) via carbon quantum dots/Au nanoparticles (Au/CQD). Structural… read more here.

Keywords: aptasensor; prostate specific; carbon; specific antigen ... See more keywords
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Label-free electrochemical aptasensor for detection of alpha-fetoprotein based on AFP-aptamer and thionin/reduced graphene oxide/gold nanoparticles.

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Published in 2018 at "Analytical biochemistry"

DOI: 10.1016/j.ab.2018.02.012

Abstract: Sensitive and accurate detection of tumor markers is critical to early diagnosis, point-of-care and portable medical supervision. Alpha fetoprotein (AFP) is an important clinical tumor marker for hepatocellular carcinoma (HCC), and the concentration of AFP… read more here.

Keywords: detection; free electrochemical; electrochemical aptasensor; afp aptamer ... See more keywords
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Enhanced performance of an electrochemical aptasensor for real-time detection of vascular endothelial growth factor (VEGF) by nanofabrication and ratiometric measurement.

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Published in 2020 at "Analytica chimica acta"

DOI: 10.1016/j.aca.2020.05.003

Abstract: Achieving a biosensing interface without baseline drift caused by variables in matrix samples is essential for real-time detection of analytes. In this study, we developed a molecular beacon based electrochemical aptasensor to realize the ratiometric… read more here.

Keywords: time detection; detection; real time; electrochemical aptasensor ... See more keywords
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An electrochemical aptasensor based on functionalized graphene oxide assisted electrocatalytic signal amplification of methylene blue for aflatoxin B1 detection

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Published in 2017 at "Electrochimica Acta"

DOI: 10.1016/j.electacta.2017.05.089

Abstract: Abstract In this work, we developed an electrochemical aptasensor by using methylene blue (MB) redox probe labeled aptamer as a signaling fragment and functional graphene oxide (FGO) as the signal-enlarging platform. The role of functionalized… read more here.

Keywords: graphene oxide; detection; functionalized graphene; methylene blue ... See more keywords
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Label-free electrochemical aptasensor based on gold and polypyrrole nanoparticles for interleukin 6 detection

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Published in 2017 at "Electrochimica Acta"

DOI: 10.1016/j.electacta.2017.11.176

Abstract: Abstract A highly sensitive, selective, fast and stable electrochemical aptasensor, based on a screen-printed carbon electrode modified with a nanocomposite architecture consisting of polypyrrole and gold nanoparticles was designed for interleukin6 detection in human serum.… read more here.

Keywords: detection; aptasensor; aptasensor based; free electrochemical ... See more keywords
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Ultra-sensitive electrochemical aptasensor for label-free detection of Aflatoxin B1 in wheat flour sample using factorial design experiments.

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Published in 2020 at "Food chemistry"

DOI: 10.1016/j.foodchem.2020.128436

Abstract: Considering the significance of mycotoxin detection in food industries, herein, an ultrasensitive aptasensor was developed based on aflatoxin B1 aptamer immobilized on Carbon quantum dots/octahedral Cu2O nanocomposite. Electrochemical measurements were based on Electrochemical Impedance Spectroscopy… read more here.

Keywords: detection; aptasensor; electrochemical aptasensor; ultra sensitive ... See more keywords
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Electrochemical aptasensor based on gold modified thiol graphene as sensing platform and gold-palladium modified zirconium metal-organic frameworks nanozyme as signal enhancer for ultrasensitive detection of mercury ions.

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Published in 2021 at "Journal of colloid and interface science"

DOI: 10.1016/j.jcis.2021.08.055

Abstract: Gold modified thiol graphene (Au@HS-rGO) was prepared and applied as sensing platform for constructing the electrochemical aptasensor. While gold-palladium modified zirconium metal-organic frameworks (AuPd@UiO-67) nanozyme was employed as signal enhancer for detecting mercury ions (Hg2+)… read more here.

Keywords: detection; gold modified; electrochemical aptasensor; platform ... See more keywords
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3-Mercapto propionic acid self-assembled on gold nano-particles applied for modification of screen-printed electrode as a new digoxin electrochemical aptasensor using graphene oxide-based signal-on strategy

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Published in 2017 at "Journal of Electroanalytical Chemistry"

DOI: 10.1016/j.jelechem.2017.01.033

Abstract: Abstract In this study a new electrochemical aptasensor has been represented for digoxin determination using signal-on strategy to improve limit of detection. To construct the sensor, gold screen printed electrode (GSPE) was modified with electrodeposited… read more here.

Keywords: digoxin; printed electrode; signal strategy; aptasensor ... See more keywords
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Sensitive electrochemical aptasensor for detecting EpCAM with silica nanoparticles and quantum dots for signal amplification

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Published in 2020 at "Journal of Electroanalytical Chemistry"

DOI: 10.1016/j.jelechem.2019.113655

Abstract: Abstract The epithelial cell adhesion molecule (EpCAM) is a known biomarker of circulating tumor cells that plays an important role in tumor metastasis. The detection of EpCAM is vital for personalized diagnosis and therapy but… read more here.

Keywords: aptasensor; silica nanoparticles; electrochemical aptasensor; epcam ... See more keywords
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Sensitivity programmable ratiometric electrochemical aptasensor based on signal engineering for the detection of aflatoxin B1 in peanut.

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Published in 2019 at "Journal of hazardous materials"

DOI: 10.1016/j.jhazmat.2019.122001

Abstract: Accurately monitoring of aflatoxin B1 (AFB1), the most hazardous mycotoxin in agricultural products, is essential for the public health, but various testing demands (e.g. detection range, sensitivity) for different samples can be challenging for sensors.… read more here.

Keywords: detection; electrochemical aptasensor; sensitivity; sensitivity programmable ... See more keywords
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An electrochemical aptasensor based on graphene doped chitosan nanocomposites for determination of Ochratoxin A

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Published in 2019 at "Microchemical Journal"

DOI: 10.1016/j.microc.2018.08.064

Abstract: Abstract A simple and efficient functionalized graphene (f-graphene) doped chitosan (CS) based electrochemical aptasensor has been developed for ochratoxin A (OTA) detection. Use of f-graphene increased the electroactive surface area of the electrode and CS… read more here.

Keywords: graphene; aptasensor based; electrochemical aptasensor; graphene doped ... See more keywords