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Type: Artigo de periódico
Title: Behavior of human immunoglobulin G adsorption onto immobilized Cu(II) affinity hollow-fiber membranes
Author: Borsoi-Ribeiro, M
Bresolin, ITL
Vijayalakshmi, M
Bueno, SMA
Abstract: Iminodiacetic acid (IDA) and tris(2-aminoethyl)amine (TREN) chelating ligands were immobilized on poly(ethylene vinyl alcohol) (PEVA) hollow-fiber membranes after activation with epichlorohydrin or butanediol diglycidyl ether (bisoxirane). The affinity membranes complexed with Cu(II) were evaluated for adsorption of human immunoglobulin G (IgG). The effects of matrix activation and buffer system on adsorption of IgG were studied. Isotherms of batch IgG adsorption onto finely cut membranes showed that neither of the chelates, IDA-Cu(II) or TREN-Cu(II), had a Langmuirean behavior with negative cooperativity for IgG binding. A comparison of equilibrium and dynamic maximum capacities showed that the dynamic capacity for a mini-cartridge in a cross-flow filtration mode (52.5 and 298.4mgg(-1) dry weight for PEVA-TREN-Cu(II) and PEVA-IDA-Cu(II), respectively) was somewhat higher than the equilibrium capacity (9.2 and 73.3mgg(-1) dry weight for PEVA-TREN-Cu(II) and PEVA-IDA-Cu(II), respectively). When mini-cartridges were used, the dynamic adsorption capacity of IDA-Cu(II) was the same for both mini-cartridge and agarose gel. Copyright (c) 2013 John Wiley & Sons, Ltd.
Subject: human IgG
affinity membranes
Country: EUA
Editor: Wiley-blackwell
Citation: Journal Of Molecular Recognition. Wiley-blackwell, v. 26, n. 10, n. 514, n. 520, 2013.
Rights: fechado
Identifier DOI: 10.1002/jmr.2296
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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