화학공학소재연구정보센터
Industrial & Engineering Chemistry Research, Vol.47, No.23, 9566-9572, 2008
Preparation and Evaluation of Cellulose Adsorbents for Hydrophobic Charge Induction Chromatography
Hydrophobic charge induction chromatography (HCIC) has been proven to be an efficient technique for antibody purification. Several HCIC adsorbents were prepared with macroporous cellulose-tungsten carbide composite beads (Cell-TuC) as the matrix. First, the cellulose beads were activated by ally] bromide (AB) or divinyl sulfone (DVS), and then they were coupled with three types of mercaptoheterocyclic groups-4-mercaptoethyl-pyridine hydrochloride (MEP), 2-mercapto-1-methyl-imidazole (MMI), and 2-mercapto-benzimidazole (MBI)-as the HCIC ligands. Four types of HCIC adsorbents were obtained, labeled Cell-TuC-AB-MEP, Cell-TuC-DVS-MEP, Cell-TuC-DVS-MMI, and Cell-TuC-DVS-MBI. The activation and coupling conditions were optimized for high ligand density. The isotherm adsorption of immunoglobutin of egg yolk (IgY) on four HCIC adsorbents were investigated. High adsorption capacities of IgY could be obtained for all four adsorbents at pH 7, and low adsorption of IgY at pH 4 and of bovine serum albumin (BSA) at pH 7 was observed, which indicates that the HCIC adsorbents prepared have a potential application for antibody purification.