Protein adsorption in two-dimensional electrochromatography packed with superporous and microporous cellulose beads  

作　　者：Dongmei WANG Guodong JIA Liang XU Xiaoyan DONG Yan SUN 

机构地区：[1]Department of Biochemical Engineering,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China [2]School of Pharmaceutical Sciences,Tianjin Medical University,Tianjin 300070,China

出　　处：《Frontiers of Chemical Science and Engineering》2009年第3期229-234,共6页化学科学与工程前沿（英文版）

基　　金：This work was supported by the Natural Science Foundation of Tianjin from Tianjin Municipal Science and Technology Commission(Grant No.08JCZDJC17100).

摘　　要：Anion-exchange superporous cellulose(DEAE-SC)and microporous cellulose(DEAE-MC)adsorbents were packed in an electrochromatographic column,and the effect of external electric field(eEF)on the dynamic adsorption was investigated.The column was designed to provide longitudinal,transverse or 2-dimensional(2D)eEF.It was found that the electro-kinetic effect caused by the introduction of an electric field played an important role in the dynamic adsorption of bovine serum albumin to the adsorbents.The dynamic binding capacity(DBC)in the presence of 2D eEF was higher than in the presence of a one-dimensional eEF.The effect of flow velocity on the DBC of the two adsorbents was also demonstrated.It was found that the effect of electric field on the DEAE-MC column was more remarkable than that on the DEAE-SC column at the same flow rate,whereas the DEAE-SC column showed higher DBC and adsorption efficiency(AE)than the DEAE-MC column.With increasing flow rate,the DEAE-SC column could still offer high DBC and AE in the presence of the 2D eEF.For example,a DBC of 21.4mg/mL and an AE of 57.7%were obtained even at a flow rate as high as 900cm/h.The results indicate that the 2D electrochromatography packed with the superporous cellulose adsorbent is promising for high-speed protein chromatography.

关 键 词：ELECTROCHROMATOGRAPHY two-dimensional electric field dynamic binding capacity superporous cellulose bead PROTEIN 

分 类 号：O64[理学—物理化学]