• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
成果搜索

author:

Huang, Y (Huang, Y.) [1] | Duan, JP (Duan, JP.) [2] (Scholars:段建平) | Chen, HQ (Chen, HQ.) [3] (Scholars:陈红青) | Chen, M (Chen, M.) [4] | Chen, GN (Chen, GN.) [5] (Scholars:陈国南)

Indexed by:

Scopus SCIE

Abstract:

A capillary electrophoresis (CE) method with laser-induced fluorescence (LIF) detection was developed for the separation and detection of carnosine-related peptides (carnosine, anserine, and homocarnosine). A sensitive and fluorogenic regent, 3-(4-carboxybenzoyl) quinoline-2-carboxaldehyde (CBQCA) was selected as a precapillary labeling reagent for imidazole dipeptides to form isoindole derivatives. The optimized molar ratio between CBQCA and peptide was found to be 75:1, and 50 mmol/L borate buff er (pH 9.2) was used for the derivatization in order to achieve good efficiency. Three imidazole dipeptides were baseline-separated within 20 min by using 112 mmol/L sodium borate (pH 10.4-10.8) as running buffer. Concentration detection limits (signal-to-noise ratios) for carnosine, anserine, and homocarnosine were 4.73, 4.37, and 3.94 nmol/L, respectively. This method has been applied to the analysis of human cerebrospinal fluid (CSF) and meat dry powder of pig and sheep. Recoveries were in the range of 82.9-104.8% for homocarnosine in CSF For carnosine and anserine, the recoveries are 98.3% and 80.2% in meat dry powder of pig and 111.2% and 112.8% in meat dry powder of sheep, respectively.

Keyword:

3-(4-carboxybenzoyl) quinoline-2-carboxaldehyde capillary electrophoresis carnosine-related dipeptides laser-induced fluorescence

Community:

  • [ 1 ] Fuzhou Univ, Dept Chem, Fujian 350002, Peoples R China
  • [ 2 ] Fujian Normal Univ, Dept Chem, Fujian, Peoples R China
  • [ 3 ] Fuzhou Univ, Analyt & Testing Ctr, Fujian, Peoples R China
  • [ 4 ] Fuzhou Gen Hosp, Ctr Med Lab, Fujian, Peoples R China

Reprint 's Address:

  • 陈国南

    [Chen, GN]Fuzhou Univ, Dept Chem, Fujian 350002, Peoples R China

Show more details

Related Keywords:

Source :

ELECTROPHORESIS

ISSN: 0173-0835

Year: 2005

Issue: 3

Volume: 26

Page: 593-599

3 . 8 5

JCR@2005

3 . 0 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 43

SCOPUS Cited Count: 45

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

Online/Total:382/10023303
Address:FZU Library(No.2 Xuyuan Road, Fuzhou, Fujian, PRC Post Code:350116) Contact Us:0591-22865326
Copyright:FZU Library Technical Support:Beijing Aegean Software Co., Ltd. 闽ICP备05005463号-1