Voltammetric determination of tryptophan in the presence of uric acid and dopamine using carbon paste electrode modified with multi-walled carbon nanotubes
TLDR
A carbon paste electrode modified with multi-walled carbon nanotubes (CPE-MWCNTs) was prepared for determination of tryptophan (Trp) in the presence of uric acid (UA) and dopamine (DA).About:
This article is published in Arabian Journal of Chemistry.The article was published on 2017-05-01 and is currently open access. It has received 22 citations till now. The article focuses on the topics: Carbon paste electrode & Differential pulse voltammetry.read more
Citations
More filters
Journal ArticleDOI
ZnO/functionalized MWCNT and Ag/functionalized MWCNT modified carbon paste electrodes for the determination of dopamine, paracetamol and folic acid
TL;DR: In this paper, functionalized multiwalled carbon nanotubes, Ag nanocomposite FMWCNT (Ag/FMWCnt) and ZnO nanoparticles (NPs) were prepared and characterized by different characterization techniques.
Journal ArticleDOI
A glassy carbon electrode modified with a composite consisting of gold nanoparticle, reduced graphene oxide and poly(L-arginine) for simultaneous voltammetric determination of dopamine, serotonin and L-tryptophan
TL;DR: The modified GCE was successfully applied to the simultaneous determination of DA, 5-HT, and L-Trp in spiked urine samples, and high recovery rates were found.
Journal ArticleDOI
A novel nanocomposite electrochemical sensor based on green synthesis of reduced graphene oxide/gold nanoparticles modified screen printed electrode for determination of tryptophan using response surface methodology approach
TL;DR: In this article, a new method is presented for the direct determination of L-tryptophan (Try), using E. tereticornis leave as an environmentally friendly reducing agent for synthesis of reduced graphene oxide/gold nanoparticles (rGO/AuNPs).
Journal ArticleDOI
Modified fluorine-doped tin oxide electrode with inorganic ruthenium red dye-multiwalled carbon nanotubes for simultaneous determination of a dopamine, uric acid, and tryptophan
Meissam Noroozifar,Mozhgan Khorasani-Motlagh,Hadi Hassani Nadiki,Mohammad Saeed Hadavi,Mohammad Mehdi Foroughi +4 more
TL;DR: In this article, a modified F-doped SnO 2 electrode with ruthenium red (RuRe) inorganic dye immobilized on a multi-walled carbon nanotube was developed.
Journal ArticleDOI
Simultaneous voltammetric analysis of tryptophan and kynurenine in culture medium from human cancer cells.
TL;DR: The paper outlines the first report of application of a differential pulse voltammetry for simultaneous quantification of clinically important molecular markers - tryptophan and its metabolite - kynurenine and shows good accuracy in presence of the sample matrix components that was confirmed by high performance liquid chromatography measurements.
References
More filters
Journal ArticleDOI
Helical microtubules of graphitic carbon
TL;DR: Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.
Journal ArticleDOI
The substantia nigra of the human brain. II. Patterns of loss of dopamine-containing neurons in Parkinson's disease.
TL;DR: The spatiotemporal progression of neuronal loss related to disease duration can be drawn in the substantia nigra pars compacta for each Parkinson's disease patient: depletion begins in the main pocket (nigrosome 1) and then spreads to other nigrosomes and the matrix along rostral, medial and dorsal axes of progression.
Journal ArticleDOI
Detection of dopamine dynamics in the brain
Journal ArticleDOI
Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode
TL;DR: The present method was applied to the determination of DA in injectable medicine and UA in urine sample to reduce the oxidation overpotentials of DA, UA and AA.