Ultrasensitive and label-free electrochemical aptasensor based on carbon dots-black phosphorus nanohybrid for the detection of Ochratoxins A

2021 ◽  
pp. 106378
Author(s):  
Kunxia Li ◽  
Xiujuan Qiao ◽  
Haiyan Zhao ◽  
Yaping He ◽  
Qinglin Sheng ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Black Phosphorus ◽  
Label Free ◽  
Electrochemical Aptasensor

Fabrication of electro-active nano-trans surfaces to design label free electrochemical aptasensor for ochratoxin A detection

2021 ◽  
Vol 379 ◽  
pp. 138172
Author(s):  
Maham Liaqat ◽  
Sara Riaz ◽  
Mian Hasnain Nawaz ◽  
Mihaela Badea ◽  
Akhtar Hayat ◽  
...  
Keyword(s):  
Ochratoxin A ◽  
Label Free ◽  
Electrochemical Aptasensor

A label-free electrochemical aptasensor based on the core–shell Cu-MOF@TpBD hybrid nanoarchitecture for the sensitive detection of PDGF-BB

The Analyst ◽  
2021 ◽  
Author(s):  
Ya Li ◽  
Zhiling Liu ◽  
Wenbo Lu ◽  
Man Zhao ◽  
He Xiao ◽  
...  
Keyword(s):  
Hybrid Nanocomposites ◽  
Sensitive Detection ◽  
Core Shell ◽  
Label Free ◽  
Electrochemical Aptasensor ◽  
The Core

A novel label-free electrochemical aptasensor based on core–shell Cu-MOF@TpBD hybrid nanocomposites has been prepared for the sensitive detection of PDGF-BB.

Boolean Logic Tree of Label-Free Dual-Signal Electrochemical Aptasensor System for Biosensing, Three-State Logic Computation, and Keypad Lock Security Operation

2017 ◽  
Vol 89 (18) ◽  
pp. 9734-9741 ◽  
Author(s):  
Jiao Yang Lu ◽  
Xin Xing Zhang ◽  
Wei Tao Huang ◽  
Qiu Yan Zhu ◽  
Xue Zhi Ding ◽  
...  
Keyword(s):  
Boolean Logic ◽  
Label Free ◽  
Electrochemical Aptasensor ◽  
Logic Tree ◽  
Logic Computation

Encapsulation of hemin in Fe-based metal-organic frameworks and its application for the direct determination of aflatoxin M1

2021 ◽  
pp. 1-10
Author(s):  
F. Jahangiri-Dehaghani ◽  
H.R. Zare ◽  
Z. Shekari
Keyword(s):  
Electrochemical Impedance ◽  
Metal Organic Frameworks ◽  
Direct Determination ◽  
Differential Pulse ◽  
Aflatoxin M1 ◽  
Label Free ◽  
Electrochemical Aptasensor ◽  
Selective Determination ◽  
Metal Organic

A label-free electrochemical aptasensor was constructed for the sensitive and selective determination of AFM1. For preparation of the aptasensor, the AFM1 aptamer was immobilised on the surface of a glassy carbon electrode modified with hemin encapsulated in Fe-based metal-organic frameworks (hemin@Fe-MIL-101). The morphology and the structure of Fe-MIL-101 and hemin@Fe-MIL-101 were evaluated by scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray powder diffraction and Brunauer-Emmett-Teller-N2 sorption methods. Electrochemical impedance spectroscopy and cyclic voltammetry were performed to monitor the fabrication process of the electrochemical aptasensor. The electrochemical reduction current of hemin encapsulated in Fe-MIL-101 serves as a signal for the quantitative determination of AFM1. Differential pulse voltammetry was done to determine the AFM1 concentration in the linear range of 1.0×10-1-100.0 ng/ml. The detection limit of AFM1 was estimated to be 4.6×10-2 ng/ml. Finally, the fabricated aptasensor was applied to determine AFM1 in raw and boiled milk samples.

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