Electrochemical detection of l-serine and l-phenylalanine at bamboo charcoal–carbon nanosphere electrode

Saha, Mitali; Das, Smita

doi:10.1007/s40097-014-0102-5

Cited by 21 publications

(5 citation statements)

References 20 publications

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“…The linear range for L -serine detection was found to be from 0.20 to 6.54 μM, with a detection limit (LOD) of 0.10 μM (signal/noise = 3) and a sensitivity of 0.33 μA μM –1 . In Table , some of the analytical characteristics obtained in this work are compared with other methods previously reported for L -serine sensing. ,− This method is easy to operate, simple, and convenient, suggesting a comparatively lower LOD for L -serine.…”

Section: Results and Discussionmentioning

confidence: 90%

Electrochemical Imprinted Polycrystalline Nickel–Nickel Oxide Half-Nanotube-Modified Boron-Doped Diamond Electrode for the Detection of l-Serine

Dai

Li²,

Li³

et al. 2015

ACS Appl. Mater. Interfaces

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This paper presents a novel and versatile method for the fabrication of half nanotubes (HNTs) using a flexible template-based nanofabrication method denoted as electrochemical imprinting. With use of this method, polycrystalline nickel and nickel(II) oxide (Ni-NiO) HNTs were synthesized using pulsed electrodeposition to transfer Ni, deposited by radio frequency magnetron sputtering on a porous polytetrafluoroethylene template, onto a boron-doped diamond (BDD) film. The Ni-NiO HNTs exhibited semicircular profiles along their entire lengths, with outer diameters of 50-120 nm and inner diameters of 20-50 nm. The HNT walls were formed of Ni and NiO nanoparticles. A biosensor for the detection of L-serine was fabricated using a BDD electrode modified with Ni-NiO HNTs, and the device demonstrated satisfactory analytical performance with high sensitivity (0.33 μA μM(-1)) and a low limit of detection (0.1 μM). The biosensor also exhibited very good reproducibility and stability, as well as a high anti-interference ability against amino acids such as L-leucine, L-tryptophan, L-cysteine, L-phenylalanine, L-arginine, and L-lysine.

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Section: Results and Discussionmentioning

confidence: 90%

Electrochemical Imprinted Polycrystalline Nickel–Nickel Oxide Half-Nanotube-Modified Boron-Doped Diamond Electrode for the Detection of l-Serine

Dai

Li²,

Li³

et al. 2015

ACS Appl. Mater. Interfaces

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“…The excessive buildup of Phe will lead to brain damage and mental retardation. , Accordingly, a simple, rapid, and highly sensitive monitoring system for detecting Phe is vital for disease diagnosis. Several detection approaches have been developed to quantify amino acids in biological fluids, including aptasensor, chemiluminescence, enzymatic colorimetric sensor, electrochemical sensor, Laser-induced fluorescence, surface plasmon resonance (SPR) sensor, and whole-cell biosensor. − However, most of these methods require expensive equipment and skilled operation experience, making amino acid quantification assays and protocols more complicated. The comparative studies [method, linearity range, and limit of detection (LOD)] on the determination of Phe in the literature are given in Table .…”

Section: Introductionmentioning

confidence: 99%

Cyclodextrin-Assisted Surface-Enhanced Photochromic Phenomena of Tungsten(VI) Oxide Nanoparticles for Label-Free Colorimetric Detection of Phenylalanine

Adachi,

Azakami,

Yamauchi

et al. 2024

ACS Omega

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Herein are presented the results of experiments designed to evaluate the effectiveness of host−guest interactions in improving the sensitivity of colorimetric detection based on surface-enhanced photochromic phenomena of tungsten(VI) oxide (WO 3 ) nanocolloid particles. The UV-induced photochromic coloration of WO 3 nanocolloid particles in the presence of aromatic αamino acid (AA), L-phenylalanine (Phe) or L-2-phenylglycine (Phg), and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin (TMβCDx) in an aqueous system was investigated using UV−vis absorption spectrometry. The characteristics of the adsorption modes and configurations of AAs on the WO 3 surface have also been identified by using a combination of adsorption isotherm analysis and attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR). A distinct linear relationship was observed between the concentration of AAs adsorbed on the WO 3 nanocolloid particles and the initial photochromic coloration rate in the corresponding UV-irradiated colloidal WO 3 in aqueous media, indicating that a simple and sensitive quantification of AAs can be achieved from UV-induced WO 3 photochromic coloration without any complicated preprocessing. The proposed colorimetric assay in the Phe/TMβCDx/WO 3 ternary aqueous system had a linear range of 1 × 10 −8 to 1 × 10 −4 mol dm −3 for Phe detection, with a limit of detection of 8.3 × 10 −9 mol dm −3 . The combined results from UV−vis absorption, ATR-FTIR, and adsorption isotherm experiments conclusively indicated that the TMβCDx-complexed Phe molecules in the Phe/TMβCDx/WO 3 ternary aqueous system are preferentially and strongly inner-sphere adsorbed on the WO 3 surface, resulting in a more significant surface-enhanced photochromic phenomenon. The findings in this study provided intriguing insights into the design and development of the "labelfree" colorimetric assay system based on the surface-enhanced photochromic phenomenon of the WO 3 nanocolloid probe.

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“…Voltammetry is a technique utilized for the analysis of compounds that undergo oxidation or reduction. In the voltammetry methods normally using electrodes such as glassy carbon electrodes (GCE), Carbon paste electrodes (CPE), screen printed electrodes (SPE), along with some modifiers [16][17][18][19][20][21][22]. Different modifiers will show different electrochemical activities [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of vanadium oxide nanoplate for electrochemical detection of amaranth in food samples

Zaeimbashi

Mostafavi

Shamspur

2022

J. Electrochem. Sci. Eng.

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Amaranth dye is an organic compound largely used in the food and beverage industries with potential toxicity effects on humans. In this paper, a new electrochemical sensor used for the determination of amaranth in foods was reported, where a kind of V2O5 nanoplate (V2O5-NPs) was employed as electrode modifying materials. The V2O5 nanoplate modified electrode enhanced its electrochemical signal obviously in the determination of amaranth in foods and exhibited a wider linear response ranging from 0.1-270.0 µM with a low detection limit of 0.04 ± 0.001 µM (3Sb/m). This work offers a new route in developing new electrochemical sensors for the determination of colorant additives and other hazardous components in foods.

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Electrochemical detection of l-serine and l-phenylalanine at bamboo charcoal–carbon nanosphere electrode

Cited by 21 publications

References 20 publications

Electrochemical Imprinted Polycrystalline Nickel–Nickel Oxide Half-Nanotube-Modified Boron-Doped Diamond Electrode for the Detection of l-Serine

Electrochemical Imprinted Polycrystalline Nickel–Nickel Oxide Half-Nanotube-Modified Boron-Doped Diamond Electrode for the Detection of l-Serine

Cyclodextrin-Assisted Surface-Enhanced Photochromic Phenomena of Tungsten(VI) Oxide Nanoparticles for Label-Free Colorimetric Detection of Phenylalanine

Synthesis of vanadium oxide nanoplate for electrochemical detection of amaranth in food samples

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