An ultra-sensitive uric acid second generation biosensor based on chemical immobilization of uricase on functionalized multiwall carbon nanotube grafted palm oil fiber in the presence of a ferrocene mediator
Gullit Deffo, Ranjit Hazarika, Marcel Cédric Deussi Ngaha, Mwina Basumatary, Shyamali Kalita, Nayab Hussain, Evangéline Njanja, Panchanan Puzari, Emmanuel Ngameni
Abstract
= 31.364 μM) shows high affinity of the UA towards the enzyme at the electrode surface. The developed biosensor demonstrates good reproducibility, repeatability, and stability with a deviation of less than 2.5%, and was successfully applied for human blood sample analysis. The CA study revealed a fast response time (2 s) of the sensor. The work has pioneered a new addition to the class of tailorable chemical species for biosensor development and proven to be a promising new tool for point of care testing (POCT) applications.
Topics & Concepts
BiosensorUric acidPalm oilFerroceneCarbon nanotubeChemistryFiberChemical engineeringChromatographyMaterials scienceOrganic chemistryNanotechnologyBiochemistryFood scienceEngineeringPhysical chemistryElectrodeElectrochemistryElectrochemical sensors and biosensorsAnalytical Chemistry and SensorsAdvanced biosensing and bioanalysis techniques