dc.contributor.author | Öztürk, Nevra | |
dc.contributor.author | Tabak, Ahmet | |
dc.contributor.author | Akgöl, Sinan | |
dc.contributor.author | Denizli, Adil | |
dc.date.accessioned | 2020-12-19T20:13:05Z | |
dc.date.available | 2020-12-19T20:13:05Z | |
dc.date.issued | 2007 | |
dc.identifier.citation | Öztürk, N., Tabak, A., Akgöl, S. & Denizli, A. (2007). Newly synthesized bentonite–histidine (Bent–His) micro-composite affinity sorbents for IgG adsorption.
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 301(1-3), 490-497. https://doi.org/10.1016/j.colsurfa.2007.01.026 | en_US |
dc.identifier.issn | 0927-7757 | |
dc.identifier.uri | https://doi.org/10.1016/j.colsurfa.2007.01.026 | |
dc.identifier.uri | https://hdl.handle.net/11436/3973 | |
dc.description.abstract | Bentonite has several advantages for use as a support, including its lack of toxicity, chemical reactivity and hydrophilicity allowing easy fixation of biomolecules. A new approach was developed to obtain an efficient and cost effective purification of IgG from human plasma. This study focused on developing bentonite-histidine micro-composite affinity sorbents (Bent-His) (38-105 ?m) for immunoglobulin-G (IgG) adsorption from human plasma. The pseudo-biospecific affinity ligand l-histidine was reacted with covalent binding onto the bentonite structures. X-ray diffraction and FT-IR analysis of Bent-His composite affinity sorbents were performed. The surface area of the bentonite and Bent-His micro-composite structures were found as 33.00 ± 0.30 and 24.70 ± 0.30, respectively. An elemental analysis of immobilized l-histidine for nitrogen was estimated to be 541.3 ?mol/g bentonite. The non-specific IgG adsorption onto bentonite structures was negligible (ca. 0.3 mg/g). Higher adsorption values up to 15.6 mg/g were obtained in which Bent-His micro-composite affinity sorbents were used from aqueous solutions. Isotherm studies were carried out to evaluate the effect of initial concentration of IgG, pH and the desorption characteristics of Bent-His micro-composite affinity sorbents. The maximum amount of IgG adsorption from aqueous solution in phosphate buffer was 15.6 mg/g at pH 7.0. A higher adsorption value was obtained from human plasma (up to 89.6 mg/g) with a purity of 94.5%. IgG molecules could be repeatedly adsorbed and desorbed with these micro-composite affinity sorbent systems without noticeable loss in their IgG adsorption capacity. © 2007 Elsevier B.V. All rights reserved. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Affinity chromatography | en_US |
dc.subject | Antibody adsorption | en_US |
dc.subject | Bentonite | en_US |
dc.subject | Composite systems | en_US |
dc.subject | Histidine ligand | en_US |
dc.title | Newly synthesized bentonite-histidine (Bent-His) micro-composite affinity sorbents for IgG adsorption | en_US |
dc.type | article | en_US |
dc.contributor.department | RTEÜ, Fen - Edebiyat Fakültesi, Kimya Bölümü | en_US |
dc.contributor.institutionauthor | Tabak, Ahmet | |
dc.identifier.doi | 10.1016/j.colsurfa.2007.01.026 | |
dc.identifier.volume | 301 | en_US |
dc.identifier.issue | 1-3 | en_US |
dc.identifier.startpage | 490 | en_US |
dc.identifier.endpage | 497 | en_US |
dc.relation.journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |