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Determination of synthetic dyes in food products by capillary zone electrophoresis in a hydrodynamically closed separation compartment.
J Capillary Electrophor. 1996 May-Jun; 3(3):165-71.JC

Abstract

The application of capillary zone electrophoresis (CZE) in a hydrodynamically closed separation system to determine synthetic food colorants added to food products was investigated. The CZE separations were carried out in a 300-micron-i.d. capillary tube made of fluorinated ethylene-propylene copolymer. The inner diameter of the capillary tube made it possible to enhance sample loads (100-nL injection volumes) so that 10-300 ppb limits of detection (LOD) values could be achieved for the studied dyes by a photometric absorbance detector operating at a 254-nm detection wave-length. With the exception of erythrosine (which exhibited a residual adsorption), very good reproducibilities of the determination were typical for 4- and 32-ppm concentrations of the dyes. This rapid CZE procedure (migration times of the resolved analytes were between 2.5 and 10.5 min) provided good selectivities in the determination of the dyes in various food matrices (soft drink concentrates, liqueurs, and chewing gums). Simple sample preparation steps were effective for the sample matrices used in the investigation.

Authors+Show Affiliations

Masár M
Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Bratislava, Slovak Republic.
Kaniansky D
No affiliation info available

MeSH

Coloring AgentsElectrolytesElectrophoresis, CapillaryFood AnalysisFood Coloring AgentsIndicators and ReagentsMolecular StructureSensitivity and Specificity

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9384749

Citation

Masár, M, and D Kaniansky. "Determination of Synthetic Dyes in Food Products By Capillary Zone Electrophoresis in a Hydrodynamically Closed Separation Compartment." Journal of Capillary Electrophoresis, vol. 3, no. 3, 1996, pp. 165-71.
Masár M, Kaniansky D. Determination of synthetic dyes in food products by capillary zone electrophoresis in a hydrodynamically closed separation compartment. J Capillary Electrophor. 1996;3(3):165-71.
Masár, M., & Kaniansky, D. (1996). Determination of synthetic dyes in food products by capillary zone electrophoresis in a hydrodynamically closed separation compartment. Journal of Capillary Electrophoresis, 3(3), 165-71.
Masár M, Kaniansky D. Determination of Synthetic Dyes in Food Products By Capillary Zone Electrophoresis in a Hydrodynamically Closed Separation Compartment. J Capillary Electrophor. 1996 May-Jun;3(3):165-71. PubMed PMID: 9384749.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determination of synthetic dyes in food products by capillary zone electrophoresis in a hydrodynamically closed separation compartment. AU - Masár,M, AU - Kaniansky,D, PY - 1996/5/1/pubmed PY - 1997/12/31/medline PY - 1996/5/1/entrez SP - 165 EP - 71 JF - Journal of capillary electrophoresis JO - J Capillary Electrophor VL - 3 IS - 3 N2 - The application of capillary zone electrophoresis (CZE) in a hydrodynamically closed separation system to determine synthetic food colorants added to food products was investigated. The CZE separations were carried out in a 300-micron-i.d. capillary tube made of fluorinated ethylene-propylene copolymer. The inner diameter of the capillary tube made it possible to enhance sample loads (100-nL injection volumes) so that 10-300 ppb limits of detection (LOD) values could be achieved for the studied dyes by a photometric absorbance detector operating at a 254-nm detection wave-length. With the exception of erythrosine (which exhibited a residual adsorption), very good reproducibilities of the determination were typical for 4- and 32-ppm concentrations of the dyes. This rapid CZE procedure (migration times of the resolved analytes were between 2.5 and 10.5 min) provided good selectivities in the determination of the dyes in various food matrices (soft drink concentrates, liqueurs, and chewing gums). Simple sample preparation steps were effective for the sample matrices used in the investigation. SN - 1079-5383 UR - https://www.unboundmedicine.com/medline/citation/9384749/Determination_of_synthetic_dyes_in_food_products_by_capillary_zone_electrophoresis_in_a_hydrodynamically_closed_separation_compartment_ DB - PRIME DP - Unbound Medicine ER -