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Browsing Kimya / Chemistry by Author "Yılmazer Keskin, Semra"

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Biosorption of cadmium, manganese, nickel, lead, and zinc ions by Aspergillus tamarii

Yılmazer Keskin, Semra; Keskin, Can Serkan (DESALINATION PUBL, 2013)

In this paper, Cd2+, Mn2+, Ni2+, Pb2+, and Zn2+ heavy metals ions adsorption properties of commercially obtained Aspergillus tamarii were investigated. The dead biomass was used with a batch system for experiments. The ...
BIOTRANSFORMATION OF (-)-VERBENONE BY Aspergillus tamarii AND Aspergillus terreus

Yıldırım, Kudret; Yılmazer Keskin, Semra (INST ORGANIC CHEM AND BIOCHEM, 2010)

The biotransformations of (-)-verbenone by Aspergillus tamarii and Aspergillus terreus were described. The biotransformation of (-)-verbenone with A. tamarii and A. terreus for 7 days gave (-)-10-hydroxyverbenone. The ...
Cysteine Interactions in Glutathione Mediated Assembly of Silver Nanoparticles in the Presence of Metal Ions

Özdemir, Abdil; Keskin, Can Serkan; Yılmazer Keskin, Semra (TRANS TECH PUBLICATIONS LTD, 2012)

We report herein results of an investigation of the assembly of silver nanoparticles mediated by glutathione (GSH) and cysteine (Cys) interaction in the presence of metal ions: Ag+, Cd2+, Co2+, Cu2+, Fe3+, Hg2+, Ni2+, Pb2+, ...
Detection of Cysteine with Glutathione-capped Silver Nanoparticles in the Presence of Ni2+ Ions

Özdemir, Abdil; Keskin, Can Serkan; Yılmazer Keskin, Semra (CHIMINFORM DATA S A, 2012)

Glutathione-capped silver nano particles (AgGSH) were prepared by the reduction of silver nitrate using NaBH4, and then were used for the detection of cysteine (Cys) in aqueous solution in the presence of Ni2+ ions via ...
Quantitative Determination of Glycine in Aqueous Solution Using Glutamate Dehydrogenase-Immobilized Glyoxal Agarose Beads

Yılmazer Keskin, Semra; Keskin, Can Serkan (HUMANA PRESS INC, 2014)

In this study, an enzymatic procedure for the determination of glycine (Gly) was developed by using a column containing immobilized glutamate dehydrogenase (GDH) on glyoxal agarose beads. Ammonia is produced from the ...
The Preparation of Zeolite/Ag Composite Powders by Electroless Deposition Process

Yılmazer Keskin, Semra (SPRINGER, 2014)

Core-shell Ag-coated zeolite composite powders were synthesized using silver electroless deposition process, which was carried out in an ammonia-based coating solution containing silver nitrate as a precursor material. The ...