Construction of an amperometric glycated hemoglobin biosensor based on Au–Pt bimetallic nanoparticles and poly (indole-5-carboxylic acid) modified Au electrode
| Autor: | Shaivya Gupta, Utkarsh Jain, Nidhi Chauhan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Indoles
Analytical chemistry Metal Nanoparticles Nanoparticle Biosensing Techniques 02 engineering and technology engineering.material 010402 general chemistry Platinum nanoparticles 01 natural sciences Biochemistry Structural Biology Electrochemistry Electrodes Molecular Biology Bimetallic strip Platinum Glycated Hemoglobin Nanocomposite Chemistry General Medicine 021001 nanoscience & nanotechnology Amperometry 0104 chemical sciences Electrode engineering Noble metal Gold 0210 nano-technology Biosensor Nuclear chemistry |
| Zdroj: | International Journal of Biological Macromolecules. 105:549-555 |
| ISSN: | 0141-8130 |
| DOI: | 10.1016/j.ijbiomac.2017.07.084 |
| Popis: | The glucose level measurement in the diabetic patient plays a vital role in identification of the treatments going on and it also provides the control over the diabetics. A new electrochemical sensing device was constructed for determination of glycated hemoglobin (HbA1c) in whole blood samples. Fructosyl amine oxidase (FAO) was bioconjugated onto hybrid nanocomposite i.e., gold nanoparticles-platinum nanoparticles (AuNPs-PtNPs) and poly indole-5-carboxylic acid (PIN5COOH), deposited electrochemically on gold electrode. Bimetallic nanoparticles not only show their individual properties but also provides the synergistic effect between the two noble metal nanoparticles. AuNPs-PtNPs shown as an amplified sensing interface at lower voltage which makes the sensor more sensitive and specific. The FAO/AuNPs-PtNPs onto PIN5COOH/Au electrode shows a promising future in diagnosis of HbA1c and diabetes management. The novel sensor formed has good accuracy, selectivity, sensitivity, precision and reliability. In addition to these, it showed good storage stability and retained 50% of its initial activity within 12 weeks at 4°C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect