title: Capillary electrophoresis of high-molecular chitosan: the natural carbohydrate biopolymer.
abstract: Due to its high resolving power and diverse application range, capillary electrophoresis (CE) has been successfully applied to the analysis of carbohydrates. In this paper, a method for the determination of high-molecular chitosan (Mr 200,000) using CE is presented. We studied the optimal condition of buffer pH and type, and column type for determination of chitosan. Optimal CE performance was found when employing 100 mM triethylamine (TEA)-phosphate buffer, pH 2.0 and untreated fused-silica capillary (50 microm x 27 cm) for the chitosan analysis. Under optimum conditions, excellent linear responses were obtained in the concentration range of 1.25-20 microM, with a linear correlation coefficient of 0.9983. The standard deviations of the migration time and peak area were found to be 2.5 and 6.4%, respectively. This method could be readily applied to chitosan determination in real biological samples and commercial products.
authors.affiliation: Bioanalysis and Biotransformation Research Center, Korea Institute of Science and Technology, Seoul.
authors.forename: E
authors.initials: E
authors.lastname: Ban
authors.forename: O K
authors.initials: OK
authors.lastname: Choi
authors.forename: J C
authors.initials: JC
authors.lastname: Ryu
authors.forename: Y S
authors.initials: YS
authors.lastname: Yoo
mesh_terms: D000818:Animals; D001704:Biopolymers / Q000737:chemistry / Q000302:isolation & purification; D002021:Buffers; D002240:Carbohydrate Sequence; D002686:Chitin / Q000031:analogs & derivatives / Q000097:blood / Q000737:chemistry / Q000302:isolation & purification*; D048271:Chitosan; D019075:Electrophoresis, Capillary / Q000379:methods*; D005021:Ethylamines; D005504:Food Analysis / Q000379:methods; D006863:Hydrogen-Ion Concentration; D008969:Molecular Sequence Data; D015394:Molecular Structure; D008970:Molecular Weight; D051381:Rats
chemical_list: D001704:Biopolymers; D002021:Buffers; D005021:Ethylamines; D002686:Chitin; D048271:Chitosan; C016162:triethylamine