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    Immobilization of albumin on magnetite nanoparticles
    (ELSEVIER SCIENCE BV, 2011) Maltaş, Esra; Özmen, Mustafa; Vural, Hasibe Çingilli; Yıldız, Salih; Ersöz, Mustafa
    The magnetite (Fe3O4) nanoparticles were prepared by the co-precipitation of ferrous and ferric salts with NH4OH, and then modified with 3-aminopropyltriethoxysilane (APTES) by silanization reaction and subsequent reaction with glutaraldehyde (GA) to obtain functional groups on their surface. The influence of different terminated groups on protein binding was studied with bare and modified magnetite nanoparticles. Amine terminated magnetite nanoparticles were shown the highest binding ability for immobilization process compared to Fe3O4 NPs and GA bonded NPs. This binding ability was shown by using sodium dodecyl polyacrylamide gel electrophoresis technique (SDS-PAGE). Albumin attached magnetite nanoparticles were also examined by Scanning Electron Microscopy (SEM). (C) 2011 Elsevier B.V. All rights reserved.