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Development of a capillary zone electrophoresis method for caseinoglycomacropeptide determination
S Cherkaoui1, N Doumenc, P Tachon
1Laboratory of Pharmaceutical Analytical Chemistry, University of Geneva, Switzerland.
Journal of Chromatography. A
|January 22, 1998
Summary
A new capillary electrophoresis method accurately quantifies caseinoglycomacropeptide (CGMP), a bovine kappa-casein derivative. This validated technique ensures CGMP quality control in manufacturing by separating and measuring its subcomponents with high sensitivity and reproducibility.
Area of Science:
- Analytical Chemistry
- Biochemistry
- Food Science
Background:
- Caseinoglycomacropeptide (CGMP) is a 64-amino acid polypeptide derived from bovine kappa-casein.
- Accurate quantification of CGMP is crucial for its industrial applications and quality control.
Purpose of the Study:
- To develop and validate a sensitive and selective capillary zone electrophoresis (CZE) method for CGMP analysis.
- To enable the separation and quantitation of various CGMP subcomponents.
Main Methods:
- Capillary zone electrophoresis (CZE) at 30 kV.
- Uncoated fused-silica capillary.
- 20 mM sodium citrate buffer at acidic pH 3.5.
Main Results:
- The developed CZE method demonstrated high selectivity, sensitivity, reproducibility, and linearity for CGMP.
- The method successfully separated various CGMP subcomponents.
- Validation confirmed the method's suitability for CGMP assay and quality control.
Conclusions:
- A robust CZE method for CGMP analysis has been established.
- This method is suitable for quality control during CGMP manufacturing, ensuring batch-to-batch consistency.
- The validated technique provides reliable data for CGMP characterization.