Amperometric detection of glucose in fruit juices with polypyrrole-based biosensor with an integrated permselective layer for exclusion of interferences

Ayenimo, J. G.; Adeloju, Samuel B O

doi:10.1016/j.foodchem.2017.01.138

Cited by 49 publications

(12 citation statements)

References 35 publications

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“…In order to study its electrochemical behavior and explain its kinetics, the Cu 2 O@MnO 2 /GCE was also operated in the 2 mM K 3 Fe(CN) 6 containing 0.1 M KCl at various scan rates in the range of 25 to 150 mV s À1 as shown in the cyclic voltammograms in Figure 4. Following to the obtained linear relationships between peak current responses and the square root of the scan rates as shown in the inset of Figure 4, it was provided a diffusioncontrolled quasi-reversible process of associated redox processes [32]. Moreover, the kinetic parameters such as charge transfer rate constant (K s ), diffusion coefficient value (D), electroactive surface area (A e ) and surface concentration (g) can be calculated as 0.56 s À1 , 1.65 3 10 À5 cm 2 s À1 , 0.12 mm 2 and 1.04 3 10 À8 mol cm À2 , respectively.…”

Section: Electrochemical Behavior Of the Modified Electrodesmentioning

confidence: 83%

Enzyme‐free Cu₂O@MnO₂/GCE for Hydrogen Peroxide Sensing

et al. 2019

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A novel composite material of copper (I) oxide at manganese (IV) oxide (Cu 2 O@MnO 2 ), was synthesized and applied for modification on the glassy carbon electrode (GCE) surface (Cu 2 O@MnO 2 /GCE) as a hydrogen peroxide (H 2 O 2 ) sensor. The composite material was characterized regarding its structural and morphological properties, using field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The Cu 2 O@MnO 2 /GCE showed an excellent electrocatalytic response to the oxidation of H 2 O 2 which provided a 0.56 s À1 charge transfer rate constant (K s ), 1.65 3 10 À5 cm 2 s À1 diffusion coefficient value (D), 0.12 mm 2 electroactive surface area (A e ) and 1.04 3 10 À8 mol cm À2 surface concentration (g). At the optimal condition, the constructed sensor exhibited a wide linear range from 0.5 mM to 20 mM with a low limit of detection (63 nM, (S/N = 3) and a good sensitivity of 256.33 mA mM À1 cm À2 . It also presented high stability (DI response AE 15 %, n = 100), repeatability (1.25 %RSD, n = 10) and reproducibility (3.55 %RSD, n = 10). The results indicated that the synthesized Cu 2 O@MnO 2 was successfully used as a new platform for H 2 O 2 sensing.

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Section: Electrochemical Behavior Of the Modified Electrodesmentioning

confidence: 83%

Enzyme‐free Cu₂O@MnO₂/GCE for Hydrogen Peroxide Sensing

et al. 2019

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“…The sensitivity value is recorded as 38.53 µA/(mM•cm 2 ) for fabricated sensor under optimized conditions [41]. A polypyrrole (PPy)-based bilayer amperometric glucose biosensor integrated with a perm-selective layer has been developed for detection of glucose [42]. The K M and sensitivity values were also determined as 8.4 mM and 3.5 µA/(mM•cm 2 ).…”

Section: Characterization Of the Biosensormentioning

confidence: 99%

A thiazolothiazole containing multichromic polymer for glucose detection

Söylemez¹,

Kaya²,

Udum³

et al. 2019

Express Polym. Lett.

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Donor-acceptor (DA) type monomers namely 2,5-di(thiophen-2-yl)thiazolo[5,4-d]thiazole (TTzTh) and 2,5-bis(3methylthiophen-2-yl)thiazolo[5,4-d]thiazole (TTzMTh) were synthesized and their electrochemical and optoelectronic properties were investigated in detail. The spectro-electrochemical analysis showed that the alkyl chain substitution results in a shift in the onset of the π-π* transition towards longer wavelengths. Depending on the donor substituents, the polymers exhibited optical band gaps 1.65 and 1.85 eV for PTTzTh and PTTzMTh, respectively. Electrochromic studies revealed that both polymers are p-dopable and multichromic. Moreover, polymer of TTzTh (PTTzTh) has been used for the development of a glucose biosensor. Glucose oxidase (GOx) was anchored on a graphite electrode which was previously modified with a film of the conjugated polymer, PTTzTh by electropolymerization. Such a sensor showed a wide linear range (0.05-2.0 mM), good sensitivity (36.32 µA/(mM•cm 2) and low limit of detection (LOD) (0.075 mM) under formerly optimized conditions. Moreover, the accuracy of the biosensor was successfully tested using two different beverages to detect glucose. Electrochemical characterizations of the polymers and their biosensor application were investigated for the first time in this work.

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“…Among conductive polymers, polypyrrole and its derivatives have been studied intensely in recent years and have gained astounding significance due to a series of advantages they bring: facile and efficient electrosynthesis, high environmental stability, biocompatibility and reproducibility . The literature recently describes polypyrrole nanoparticles based platforms for the detection of a wide range of molecules such as: inosine monophosphate , glucose , heavy metals and neurotransmitters . However, the main disadvantage of pyrrole is the lack of functional groups.…”

Section: Introductionmentioning

confidence: 99%

Poly‐(pyrrole‐3‐carboxylic acid) Based Nanostructured Platform for the Detection of Carcinoembryonic Antigen

et al. 2018

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A nanostructured platform based on pyrrole 3‐carboxylic acid was developed and it was used for the detection of carcinoembryonic antigen, a biomarker for gastro‐intestinal tract cancers. The conductive polymer offers possibilities for functionalization due to the presence of the carboxylic group. The platform was tailored by polymerizing pyrrole 3‐carboxylic acid at the surface of a graphite‐based screen‐printed electrode by using multiple pulse amperometry and cyclic voltammetry. The carboxylic groups were activated, facilitating the formation of amide covalent bonds with the terminal amine groups from the antibody. Each step's optimization was tracked by performing electrochemical impedance spectroscopy. The immunosensor was successfully applied for the detection of carcinoembryonic antigen in synthetic samples. By comparing pyrrole 3‐carboxylic acid with pyrrole, significantly greater increases of the charge transfer resistance were achieved by using the functionalized monomer for the immobilization step. The binding of the anti‐CEA was reproducible and directly proportional with its concentration. The increase of the charge transfer resistance after the incubation with carcinoembryonic antigen was linearly correlated with the concentration of the sample and the LOD was 33.33 pg mL−1. A simple nanostructured platform for the label‐free detection of a carcinogenic biomarker molecule was developed, thus holding great opportunities for clinical diagnostics and other biosensor applications.

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Amperometric detection of glucose in fruit juices with polypyrrole-based biosensor with an integrated permselective layer for exclusion of interferences

Cited by 49 publications

References 35 publications

Enzyme‐free Cu₂O@MnO₂/GCE for Hydrogen Peroxide Sensing

Enzyme‐free Cu₂O@MnO₂/GCE for Hydrogen Peroxide Sensing

A thiazolothiazole containing multichromic polymer for glucose detection

Poly‐(pyrrole‐3‐carboxylic acid) Based Nanostructured Platform for the Detection of Carcinoembryonic Antigen

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Amperometric detection of glucose in fruit juices with polypyrrole-based biosensor with an integrated permselective layer for exclusion of interferences

Cited by 49 publications

References 35 publications

Enzyme‐free Cu2O@MnO2/GCE for Hydrogen Peroxide Sensing

Enzyme‐free Cu2O@MnO2/GCE for Hydrogen Peroxide Sensing

A thiazolothiazole containing multichromic polymer for glucose detection

Poly‐(pyrrole‐3‐carboxylic acid) Based Nanostructured Platform for the Detection of Carcinoembryonic Antigen

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Product

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Enzyme‐free Cu₂O@MnO₂/GCE for Hydrogen Peroxide Sensing

Enzyme‐free Cu₂O@MnO₂/GCE for Hydrogen Peroxide Sensing