Capillary electrophoresis with amperometric detection of curcumin in Chinese herbal medicine pretreated by solid-phase extraction.

Journal Article (Journal Article)

In the present study, curcumin from Chinese herbal medicine turmeric was determined by capillary electrophoresis with amperometric detection (CE-AD) pretreated by a self-designed, simple, inexpensive solid-phase extraction (SPE) cartridge based on the material of tributyl phosphate resin. An average concentration factor of 9 with the recovery of > 80% was achieved when applied to the analysis of curcumin in extracts of tumeric. Under the optimized CE-AD conditions: a running buffer composed of 15 mM phosphate buffer at a pH 9.7, separation voltage at 16 kV, injection for 6 s at 9 kV and detection at 1.20 V, CE-AD with SPE exhibited low detection limit as 3 x 10(-8) mol/l (S/N = 3), high efficiency of 1.0 x 10(5) N, linear range of 7 x 10(-4) -3 x 10(-6) mol/l (r = 0.9986) for curcumin extracted from light petroleum. The method developed resulted in enhancement of the detection sensitivity and reduction of interference from sample matrix in complicated samples and exhibited the potential application for routine analysis, especially in food, because a relatively complete process of sample treatment and analysis was described.

Full Text

Duke Authors

Cited Authors

  • Sun, X; Gao, C; Cao, W; Yang, X; Wang, E

Published Date

  • July 12, 2002

Published In

Volume / Issue

  • 962 / 1-2

Start / End Page

  • 117 - 125

PubMed ID

  • 12198956

International Standard Serial Number (ISSN)

  • 0021-9673

Digital Object Identifier (DOI)

  • 10.1016/s0021-9673(02)00509-5


  • eng

Conference Location

  • Netherlands