A New Well–Dawson Polyoxometalate Based Compound Containing Helix for Electrochemical Uric Acid Biosensor

2020 ◽  
Author(s):  
Mingqi Xu ◽  
Chang Liu ◽  
Yunliang Wang ◽  
Junran Wang ◽  
Jianlei Feng ◽  
...  
Keyword(s):  
Uric Acid ◽  
Uric Acid Biosensor

Fabrication and evaluation of uric acid biosensor using nano-composites

2021 ◽  
Author(s):  
Omar Abdul Majeed Abed Mohammed ◽  
Khulood Abid Saleh ◽  
Shatha Abdul Wadood AL-Shammaree
Keyword(s):  
Uric Acid ◽  
Nano Composites ◽  
Uric Acid Biosensor

scholarly journals Activity and Stability of Biofilm Uricase ofLactobacillus plantarumfor Uric Acid Biosensor

2016 ◽  
Vol 31 ◽  
pp. 012028
Author(s):  
Dyah Iswantini ◽  
Rescy Rachmatia ◽  
Novita Rose Diana ◽  
Novik Nurhidayat ◽  
Akhiruddin ◽  
...  
Keyword(s):  
Uric Acid ◽  
Uric Acid Biosensor

scholarly journals Synthesis of Heart/Dumbbell-Like CuO Functional Nanostructures for the Development of Uric Acid Biosensor

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1378 ◽  
Author(s):  
Zafar Ibupoto ◽  
Aneela Tahira ◽  
Hamid Raza ◽  
Gulzar Ali ◽  
Aftab Khand ◽  
...  
Keyword(s):  
Uric Acid ◽  
Photoelectron Spectroscopy ◽  
Lithium Ion ◽  
Nanostructured Material ◽  
Soft Template ◽  
X Ray ◽  
Growth Method ◽  
Enzyme Molecules ◽  
New Generation ◽  
Uric Acid Biosensor

It is always demanded to prepare a nanostructured material with prominent functional properties for the development of a new generation of devices. This study is focused on the synthesis of heart/dumbbell-like CuO nanostructures using a low-temperature aqueous chemical growth method with vitamin B12 as a soft template and growth directing agent. CuO nanostructures are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) techniques. CuO nanostructures are heart/dumbbell like in shape, exhibit high crystalline quality as demonstrated by XRD, and have no impurity as confirmed by XPS. Apparently, CuO material seems to be porous in structure, which can easily carry large amount of enzyme molecules, thus enhanced performance is shown for the determination of uric acid. The working linear range of the biosensor is 0.001 mM to 10 mM with a detection limit of 0.0005 mM and a sensitivity of 61.88 mV/decade. The presented uric acid biosensor is highly stable, repeatable, and reproducible. The analytical practicality of the proposed uric acid biosensor is also monitored. The fabrication methodology is inexpensive, simple, and scalable, which ensures the capitalization of the developed uric acid biosensor for commercialization. Also, CuO material can be used for various applications such as solar cells, lithium ion batteries, and supercapacitors.

Construction of amperometric uric acid biosensor based on uricase immobilized on PBNPs/cMWCNT/PANI/Au composite

2012 ◽  
Vol 50 (1) ◽  
pp. 112-118 ◽  
Author(s):  
Rachna Rawal ◽  
Sheetal Chawla ◽  
Nidhi Chauhan ◽  
Tulika Dahiya ◽  
C.S. Pundir
Keyword(s):  
Uric Acid ◽  
Uric Acid Biosensor

Immobilization of Uricase Enzyme on Self-Assembled Gold Nanoparticles for Application in Uric Acid Biosensor

2011 ◽  
Vol 11 (6) ◽  
pp. 4692-4701 ◽  
Author(s):  
T. Ahuja ◽  
V.K. Tanwar ◽  
S.K. Mishra ◽  
D. Kumar ◽  
A.M. Biradar ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Uric Acid ◽  
Self Assembled ◽  
Uric Acid Biosensor

An efficient uric acid biosensor based on tin oxide thin film matrix

2013 ◽  
Vol 1530 ◽  
Author(s):  
Kashima Arora ◽  
Monika Tomar ◽  
Vinay Gupta
Keyword(s):  
Thin Film ◽  
Uric Acid ◽  
Tin Oxide ◽  
Active Sites ◽  
Oxide Thin Film ◽  
Sno2 Thin Film ◽  
Uric Acid Concentration ◽  
Selective Determination ◽  
Wide Range ◽  
Uric Acid Biosensor

ABSTRACTUric acid biosensor has been developed using tin oxide (SnO2) thin film. The electrochemistry of the developed thin film based electrode is investigated by using cyclic voltammetry. The obtained results demonstrate that the semiconducting SnO2 matrix offers a striking electrocatalytic activity to the immobilized uricase towards the oxidation of uric acid and promotes the transfer of electrons from the active sites of enzyme onto the electrode. SnO2 thin film matrix gives a high sensitivity of 0.2 mA/mM and a shelf life of 20 weeks. Moreover, SnO2 electrode exhibits excellent selectivity and outstanding analytical stability and reproducibility, which enables a reliable and selective determination of uric acid. The SnO2 based uric acid biosensor shows a linear variation in a wide range from 0 to 1.0 mM of uric acid concentration and the Michaelis Menten Constant (Km) is estimated to be 0.28 mM which indicated the high affinity of uricase towards its analyte (uric acid). The results indicate that the SnO2 thin film matrix offers a new and promising platform for the development of novel biosensors.

Fabrication of highly sensitive uric acid biosensor based on directly grown ZnO nanosheets on electrode surface

2015 ◽  
Vol 206 ◽  
pp. 146-151 ◽  
Author(s):  
Rafiq Ahmad ◽  
Nirmalya Tripathy ◽  
Na Keum Jang ◽  
Gilson Khang ◽  
Yoon-Bong Hahn
Keyword(s):  
Uric Acid ◽  
Electrode Surface ◽  
Highly Sensitive ◽  
Zno Nanosheets ◽  
Uric Acid Biosensor
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