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Title: Direct injection of human serum and pharmaceutical formulations for glucosamine determination by CE-C 4D method
Authors: Chaisuwan P.
Kongprasertsak T.
Sangcakul A.
Smith N.W.
Nachapricha D.
Wilairat P.
Uraisin K.
Keywords: Back ground electrolyte
Capacitively coupled contactless conductivity detection
Detection limits
HPLC method
Human serum
Matrix removal
Migration time
Peak area
Pharmaceutical formulation
Protein precipitation
Serum samples
Body fluids
Capillary electrophoresis
High performance liquid chromatography
Precipitation (chemical)
Direct injection
capillary electrophoresis
capillary electrophoresis capacitively coupled contactless conductivity detection
carbohydrate analysis
drug formulation
high performance liquid chromatography
priority journal
proton transport
Chemistry, Pharmaceutical
Electrophoresis, Capillary
Pharmaceutical Preparations
Issue Date: 2011
Abstract: A simple CE-C 4D method has been developed for the determination of glucosamine by direct injection of human serum and pharmaceutical samples. Glucosamine was electrokinetically injected and analysed in its protonated form using 20mM MES/His (pH 6) as background electrolyte in order to separate it from the matrix and to provide a better response to the C 4D detector. Separation of glucosamine in human serum and pharmaceutical samples was performed in 3min without the need for protein precipitation or matrix removal. Good precision in terms of %RSD for the migration time and peak area were less than 1.91% (n=10). The conductivity signal was linear with glucosamine concentration in the range 0.10-2.50mg/mL, with a detection limit of 0.03mg/mL. Recoveries of glucosamine in serum and pharmaceutical samples were 86.5-104.78%. The method was successfully applied for the determination of the glucosamine content in pharmaceutical formulations and validated with high performance liquid chromatography (HPLC). Good agreements were observed between the developed method, label values and the HPLC method. Glucosamine could be detected in spiked serum sample by direct injection. This was not possible by HPLC due to co-eluting interferences. © 2011 Elsevier B.V.
ISSN: 15700232
Appears in Collections:Scopus 1983-2021

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