A Nonenzymatic Glucose Sensor Based on the Excellent Dispersion of a Graphene Oxide-Poly(acrylic acid)-Palladium Nanoparticle-Modified Screen-Printed Carbon Electrode

2019 ◽  
Vol 166 (13) ◽  
pp. B1079-B1087 ◽  
Author(s):  
Kritsada Samoson ◽  
Panote Thavarungkul ◽  
Proespichaya Kanatharana ◽  
Warakorn Limbut
Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4324 ◽  
Author(s):  
Nurul Talib ◽  
Faridah Salam ◽  
Yusran Sulaiman

Clenbuterol (CLB) is an antibiotic and illegal growth promoter drug that has a long half-life and easily remains as residue and contaminates the animal-based food product that leads to various health problems. In this work, electrochemical immunosensor based on poly(3,4-ethylenedioxythiophene)/graphene oxide (PEDOT/GO) modified screen-printed carbon electrode (SPCE) for CLB detection was developed for antibiotic monitoring in a food product. The modification of SPCE with PEDOT/GO as a sensor platform was performed through electropolymerization, while the electrochemical assay was accomplished while using direct competitive format in which the free CLB and clenbuterol-horseradish peroxidase (CLB-HRP) in the solution will compete to form binding with the polyclonal anti-clenbuterol antibody (Ab) immobilized onto the modified electrode surface. A linear standard CLB calibration curve with R2 = 0.9619 and low limit of detection (0.196 ng mL−1) was reported. Analysis of milk samples indicated that this immunosensor was able to detect CLB in real samples and the results that were obtained were comparable with enzyme-linked immunosorbent assays (ELISA).


2019 ◽  
Vol 297 ◽  
pp. 126763
Author(s):  
XinXin He ◽  
Shwu Jen Chang ◽  
Kalpana Settu ◽  
Ching-Jung Chen ◽  
Jen-Tsai Liu

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