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Abstract
Acetylcholine (ACh) biosensor is developed based on mediator-free acetylcholine oxidase (AChOx) by selfassembled monolayer (SAM) onto lab-made micro-chip. The simple cyclic voltammetry (CV) method is utilized in mediator- free system in phosphate buffer solution (PBS, 0.1M) at room conditions. The analytical parameters of AChOx fabricated electrode employed a lower detection limit (DL, 0.136 nM), a wide linear dynamic range (LDR, 1.0 nM to 1.0 mM), good linearity (R= 0.9991), and higher sensitivity (2.7329 μAmM-1cm-2) where a tiny sample volume (70.0 μL) is required. The micro-chip system executes a simple and efficient approach to immobilize the enzymes onto SAM modified surface, which can improve the biosensor performances for a large group of biomolecules in broad scale of biomedical applications in health-care fields.
Keywords: Acetylcholine oxidase, acetylcholine, cyclic voltammetry, detection limit, immobilization, linear dynamic range, mediator-free system, micro-chips, phosphate buffer solution, selectivity, self-assembled monolayer, sensitivity, stability, thioglycolic acid
Current Proteomics
Title:Development of Mediator-Free Acetylcholine Biosensor Based on Acetylcholine Oxidase Immobilized Micro-Chips
Volume: 9 Issue: 4
Author(s): Mohammed Muzibur Rahman
Affiliation:
Keywords: Acetylcholine oxidase, acetylcholine, cyclic voltammetry, detection limit, immobilization, linear dynamic range, mediator-free system, micro-chips, phosphate buffer solution, selectivity, self-assembled monolayer, sensitivity, stability, thioglycolic acid
Abstract: Acetylcholine (ACh) biosensor is developed based on mediator-free acetylcholine oxidase (AChOx) by selfassembled monolayer (SAM) onto lab-made micro-chip. The simple cyclic voltammetry (CV) method is utilized in mediator- free system in phosphate buffer solution (PBS, 0.1M) at room conditions. The analytical parameters of AChOx fabricated electrode employed a lower detection limit (DL, 0.136 nM), a wide linear dynamic range (LDR, 1.0 nM to 1.0 mM), good linearity (R= 0.9991), and higher sensitivity (2.7329 μAmM-1cm-2) where a tiny sample volume (70.0 μL) is required. The micro-chip system executes a simple and efficient approach to immobilize the enzymes onto SAM modified surface, which can improve the biosensor performances for a large group of biomolecules in broad scale of biomedical applications in health-care fields.
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Cite this article as:
Muzibur Rahman Mohammed, Development of Mediator-Free Acetylcholine Biosensor Based on Acetylcholine Oxidase Immobilized Micro-Chips, Current Proteomics 2012; 9 (4) . https://dx.doi.org/10.2174/157016412805219143
DOI https://dx.doi.org/10.2174/157016412805219143 |
Print ISSN 1570-1646 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6247 |
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