Browsing Fen-Edebiyat Fakültesi by Author "Atacan, Keziban"

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Characterization and immobilization of trypsin on tannic acid modified Fe3O4 nanoparticles

Atacan, Keziban; Özacar, Mahmut (ELSEVIER SCIENCE BV, 2015)

Fe3O4 nanoparticles (NPs) were synthesized by co-precipitating Fe2+ and Fe3+ in an ammonia solution. Fe3O4 NPs functionalized with tannic acid were prepared. After functionalization process, trypsin enzyme was immobilized ...
Covalent immobilization of trypsin onto modified magnetite nanoparticles and its application for casein digestion

Atacan, Keziban; Çakıroğlu, Bekir; Özacar, Mahmut (ELSEVIER SCIENCE BV, 2017)

The immobilization method consists of the production magnetite nanoparticles (Fe3O4) by solvothermal treatment of FeCl3 and sodium acetate (NaAc) in the presence of ethylene glycol. Subsequently, the surface of magnetite ...
Efficiency of glucose oxidase immobilized on tannin modified NiFe2O4 nanoparticles on decolorization of dye in the Fenton and photo-biocatalytic processes

Atacan, Keziban; Güy, Nuray; Güy, Nuray; Soner Cakar; Özacar, Mahmut (ELSEVIER SCIENCE SA, 2019)

Immobilized enzymes are significantly studied both environmental and textile industries. In this work, glucose oxidase was immobilized on the tannin coated NiFe2O4 magnetic nanoparticles for decolorization of indigo carmin. ...
Efficient protein digestion using immobilized trypsin onto tannin modified Fe3O4 magnetic nanoparticles

Atacan, Keziban; Atacan, Keziban; Çakıroğlu, Bekir; Özacar, Mahmut (ELSEVIER SCIENCE BV, 2017)

Fe3O4 magnetic nanoparticles (MNPs) were prepared via solvothermal method. A commercially available trypsin was covalently immobilized onto MNPs modified with tannin (T) via a novel binding process. The morphology, structure, ...
Improvement of the stability and activity of immobilized trypsin on modified Fe3O4 magnetic nanoparticles for hydrolysis of bovine serum albumin and its application in the bovine milk

Atacan, Keziban; Atacan, Keziban; Çakıroğlu, Bekir; Çakıroğlu, Bekir; Özacar, Mahmut (ELSEVIER SCI LTD, 2016)

Trypsin (EC 3.4.21.4) was successfully immobilized on the surface of Fe3O4 magnetic nanoparticles that had been pre-treated with gallic acid (GA). Measurements of protein load by using Bradford assay and the trypsin-catalyzed ...
Investigation of antibacterial properties of novel papain immobilized on tannic acid modified Ag/CuFe2O4 magnetic nanoparticles

Atacan, Keziban; Munteha Ozacar; Özacar, Mahmut (ELSEVIER SCIENCE BV, 2018)

The non-toxic CuFe2O4 magnetic nanoparticles have been solvothermally synthesized, characterized and used as an efficient magnetic precursor for papain immobilization and then investigated antibacterial properties of them. ...
New CuFe2O4/amorphous manganese oxide nanocomposites used as photocatalysts in photoelectrochemical water splitting

Atacan, Keziban; Burcu Topaloglu; Özacar, Mahmut (ELSEVIER SCIENCE BV, 2018)

The utilization of visible light for the photoelectrochemical production of hydrogen gas from water is a scientific challenge. Water splitting for the production of hydrogen using copper-ferrite and amorphous manganese ...
Role of Ag3PO4 and Fe3O4 on the photocatalytic performance of magnetic Ag3PO4/ZnO/Fe3O4 nanocomposite under visible light irradiation

Güy, Nuray; Atacan, Keziban; Karaca, Ertuğrul; Özacar, Mahmut (PERGAMON-ELSEVIER SCIENCE LTD, 2018)

Novel magnetically separable nanocomposite photocatalyst Ag3PO4/ZnO/Fe3O4, prepared by the coprecipitation and microwave assisted hydrothermal synthesis, was first investigated as the photocatalyst for congo red degradation ...