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author:

Huang, Ying (Huang, Ying.) [1] | Jiang, Xiuyan (Jiang, Xiuyan.) [2] | Wang, Wei (Wang, Wei.) [3] (Scholars:王伟) | Duan, Jianping (Duan, Jianping.) [4] (Scholars:段建平) | Chen, Guonan (Chen, Guonan.) [5] (Scholars:陈国南)

Indexed by:

EI Scopus SCIE

Abstract:

A method of capillary electrophoresis with wall-jet amperometric detection (AD) has been developed for separation and determination of L-tyrosine (Tyr) and its metabolites. such as Tyramine (TA), p-hydroxyphenylpyruvic (pHPP), homogentisic acid (HGA) and sonic dipeptides containing Tyr. such as Tyr-Gly-Gly (YGG), Tyr-Arg (YR) and Tyr-D-Arg (Y-D-R). A carbon disk electrode was used as the working electrode and the optimal detection potential was 1.00 V (versus Ag/AgCl). At 18 kV of applied voltage, the seven compounds were completely separated within 20 min in 110 x 10(-3) mol/L Na2HPO4-NaH2PO4 buffer (pH 7.10) containing 3 x 10(-3) mol/L beta-cyclodextrin (beta-CD). Good linear relationship was obtained for all analytes and the detection limits of seven analytes were in the range of 0.95-4.25 ng/mL. The proposed method has been applied to examine the metabolic process Of L-tyrosine in rabbit's urine. (c) 2006 Elsevier B.V. All rights reserved.

Keyword:

amperometric detection beta-cyclodextrin capillary electrophoresis L-tyrosine pharmacokinetics

Community:

  • [ 1 ] Fuzhou Univ, MOE Key Lab Anal & Detect Technol Food Safety, Fujian 350002, Peoples R China
  • [ 2 ] Fuzhou Univ, Dept Chem, Fujian 350002, Peoples R China
  • [ 3 ] Fujian Normal Univ, Coll Chem & Mat Sci, Fujian 350007, Peoples R China

Reprint 's Address:

  • 陈国南

    [Chen, Guonan]Fuzhou Univ, MOE Key Lab Anal & Detect Technol Food Safety, Fujian 350002, Peoples R China

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Source :

TALANTA

ISSN: 0039-9140

Year: 2006

Issue: 5

Volume: 70

Page: 1157-1163

2 . 8 1

JCR@2006

5 . 6 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 55

SCOPUS Cited Count: 62

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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