Construction and application of β-(3-N-oxalyl-<scp>l</scp>-2,3-diaminopropanoic acid) biosensor based on carboxylated multiwalled carbon nanotubes/gold nanoparticles/chitosan/Au electrode

Batra, Bhawna; Pundir, C.S.

doi:10.1039/c4ra05977h

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Nanomaterials Based ˇ-Odap Biosensors1

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2021

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Cited by 5 publications

(1 citation statement)

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“…The first ODAP biosensor based on nanomaterials was reported from our laboratory [64]. The new enzyme electrode (glutamate oxidase/carboxylated multiwalled carbon nanotubes/gold nanoparticles/chitosan/gold electrode (Fig.…”

Section: Nanomaterials Based ˇ-Odap Biosensorsmentioning

confidence: 99%

Determination of β-ODAP by various methods with special emphasis on biosensors: A mini-review

Pundir

Batra

2015

Process Biochemistry

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Section: Nanomaterials Based ˇ-Odap Biosensorsmentioning

confidence: 99%

Determination of β-ODAP by various methods with special emphasis on biosensors: A mini-review

Pundir

Batra

2015

Process Biochemistry

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Glutamate detection by amino functionalized tetrahedral amorphous carbon surfaces

Kaivosoja

Tujunen

Jokinen

et al. 2015

Talanta

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In this paper, a novel amperometric glutamate biosensor with glutamate oxidase (GlOx) immobilized directly on NH2 functionalized, platinum doped tetrahedral amorphous carbon (ta-C) film, has been successfully developed. First, we demonstrate that direct GlOx immobilization is more effective on amino-groups than on carboxyl-or hydroxyl-groups. Second, we show that anodizing and plasma treatments increase the amount of nitrogen and the proportion of protonated 2 amino groups relative to amino groups on the aminosilane coating, which subsequently results in an increased amount of active GlOx on the surface. This effect, however, is found to be unstable due to unstable electrostatic interactions between GlOx and NH3 + . We demonstrate the detection of glutamate in the concentration range of 10 µM−1mM using the NH2 functionalized Pt doped ta-C surface. The biosensor showed high sensitivity (2.9 nA μM -1 cm -2 ), low detection limit (10 μM) and good storage stability. The electrode response to glutamate was linear in the concentrations ranging from10 µM to 500 µM. In conclusion, the study shows that GlOx immobilization is most effective on aminosilane treated ta-C surface without any pre-treatments and the fabricated sensor structure is able to detect glutamate in the micromolar range.

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Electrochemical Characterization and Voltammetric Determination of β-N-oxalyl-L-α,β-diaminopropionic Acid in Grass Pea Seeds

Çetinkaya¹,

Erdoğan

Onar

2017

Analytical Letters

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Construction and application of β-(3-N-oxalyl-l-2,3-diaminopropanoic acid) biosensor based on carboxylated multiwalled carbon nanotubes/gold nanoparticles/chitosan/Au electrode

Abstract: We describe the construction of a new enzyme electrode (GluOx/cMWCNT/AuNPs/CHIT/Au) and its application for the amperometric determination of β-ODAP (3-N-oxalyl-L-2,3-diaminopropanoic acid) in Lathyrus seeds.

Cited by 5 publications

References 28 publications

Determination of β-ODAP by various methods with special emphasis on biosensors: A mini-review

Determination of β-ODAP by various methods with special emphasis on biosensors: A mini-review

Glutamate detection by amino functionalized tetrahedral amorphous carbon surfaces

Electrochemical Characterization and Voltammetric Determination of β-N-oxalyl-L-α,β-diaminopropionic Acid in Grass Pea Seeds

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