Browsing by Author "Okumus, Veysi"
Now showing items 1-13 of 13
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Anoxybacillus sp. SO B1-Immobilized Amberlite XAD-16 for Solid-Phase Preconcentration of Cu(II) and Pb(II) and Their Determinations by Flame Atomic Absorption Spectrometry
Oral, Elif Varhan; Ozdemir, Sadin; Dolak, Ibrahim; Okumus, Veysi; Dundar, Abdurrahman; Ziyadanogullari, Berrin; Aksoy, Zehra (Taylor & Francis Inc, 2015)A new method for the determination of Cu(II) and Pb(II) by flame atomic absorption spectrometry (FAAS) after preconcentrating on a column containing Anoxybacillus sp. SO B1-immobilized Amberlite XAD-16 was developed. The ... -
Antioxidant Properties of Cultured Mycelia from Four Pleurotus Species Produced in Submerged Medium
Dundar, Abdurrahman; Okumus, Veysi; Ozdemir, Sadin; Yildiz, Abdunnasir (Taylor & Francis Inc, 2013)The ethanolic extracts of dried cultured mycelia of Pleurotus ostreatus, Pleurotus eryngii, Pleurotus florida, and Pleurotus sajor-caju were analyzed for antioxidant activity in different systems. Tests used are as follows: ... -
In vitro propagation of Diyarbakir watermelons and comparison of direct-seeded and transplanted watermelon
Okumus, Veysi; Pirinc, Vedat; Onay, Ahmet; Basaran, Davut (Tubitak Scientific & Technological Research Council Turkey, 2011)A rapid protocol using shoot tip explants for micropropagation of Diyarbakir watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] types Surme, Beyazkis and Karakis was achieved. Shoot tips from 5-day-old in vitro ... -
Isolation of a thermophilic Anoxybacillus flavithermus sp nov and production of thermostable ?-amylase under solid-state fermentation (SSF)
Ozdemir, Sadin; Matpan, Fatma; Okumus, Veysi; Dundar, Abdurrahman; Ulutas, Mehmet Sefa; Kumru, Mert (Bmc, 2012)A new bacteria was isolated from hot-spring water of Gazligol, Afyonkarahisar in Turkey. Based on morphological and biochemical tests and 16S rRNA gene sequence analysis, the isolate belonged to the Anoxybacillus flavithermus ... -
Pleurotus eryngii immobilized Amberlite XAD-16 as a abstract insert solid-phase biosorbent for preconcentrations of Cd2+ and Co2+ and their determination by ICP-OES (vol 99, pg 502, 2012)
Ozdemir, Sadin; Okumus, Veysi; Kilinc, Ersin; Bilgetekin, Havin; Dundar, Abdurrahman; Ziyadanogullari, Berrin (Elsevier Science Bv, 2013)[Abstract Not Available] -
Pleurotus eryngii immobilized Amberlite XAD-16 as a solid-phase biosorbent for preconcentrations of Cd2+ and Co2+ and their determination by ICP-OES
Ozdemir, Sadin; Okumus, Veysi; Kilinc, Ersin; Bilgetekin, Havin; Dundar, Abdurrahman; Ziyadanogullari, Berrin (Elsevier Science Bv, 2012)This article reports a method that is used for the preconcentration and determination of Cd2+ and Co2+ in vegetables, using Pleurotus eryngii immobilized Amberlite XAD-16 as a solid-phase biosorbent. The concentrations of ... -
Preconcentration of metal ions using microbacteria
Ozdemir, Sadin; Okumus, Veysi; Dundar, Abdurrahman; Kilinc, Ersin (Springer Wien, 2013)This review (160 refs). covers the current state of the art of microbacteria-based sorbents for preconcentration of metal ions at trace levels. We highlight advantages and major challenges of the techniques and discuss ... -
Preconcentration with Bacillus subtilis-Immobilized Amberlite XAD-16: Determination of Cu2+ and Ni2+ in River, Soil, and Vegetable Samples
Okumus, Veysi; Ozdemir, Sadin; Kilinc, Ersin; Dundar, Abdurrahman; Yuksel, Uyan; Baysal, Zubeyde (Taylor & Francis Inc, 2015)Solid-phase extraction (SPE) method was developed for the preconcentration of Cu2+ and Ni2+ before their determination by inductively coupled plasma optical emission spectrometry (ICP-OES). Bacillus subtilis-immobilized ... -
Selective preconcentration of Lanthanum(III) by Coriolus versicolor immobilised on Amberlite XAD-4 and its determination by ICP-OES
Ozdemir, Sadin; Okumus, Veysi; Dundar, Abdurrahman; Celik, Kadir Serdar; Yuksel, Uyan; Kilinc, Ersin (Taylor & Francis Ltd, 2014)Coriolus versicolor, a wood fungus, was immobilised on Amberlite XAD-4 and used as solid-phase biosorbent for preconcentrations of rare earth elements. La(III), Th(IV), U(IV) and Ce(III) were subjected to solid-phase ... -
Simultaneous High-Performance Thin-Layer Chromatographic Determination of Indole Acetic Acid, Indole Butyric Acid, and Absisic Acid in in vitro Seedling of Watermelon Exposed to Heavy Metals
Kilinc, Ersin; Okumus, Veysi; Duz, M. Zahir; Aydin, Firat (Springer Heidelberg, 2012)A new method based on the use of high-performance thin-layer chromatography (HPTLC) was developed for the simultaneous determination of the plant growth hormones, indole acetic acid, indole butyric acid, and absisic acid ... -
Solid Phase Extraction Based on the Use of Agaricus arvensis as a Fungal Biomass for the Peconcentrations of Pb and Al Prior to Their Determination in Vegetables by ICP-OES
Kilinc, Ersin; Dundar, Abdurrahman; Ozdemir, Sadin; Okumus, Veysi (Atomic Spectroscopy Press Ltd, 2013)A solid phase extraction (SPE) method based on the use of a fungal biomass as sorbent was developed for the preconcentrations of Pb and Al. Agaricus arvensis was immobilized on Amberlite XAD-4 and loaded onto a column. ... -
Synthesis of ionic liquid-based Ru(II)-phosphinite complexes and evaluation of their antioxidant, antibacterial, DNA-binding, and DNA cleavage activities
Meric, Nermin; Kayan, Cezmi; Rafikova, Khadichakhan; Zazybin, Alexey; Okumus, Veysi; Aydemir, Murat; Durap, Feyyaz (Springer International Publishing Ag, 2019)Two Ru(II) complexes were synthesized by reaction of phosphinite-functionalized imidazolium salts [(Ph2PO)C7H11N2Cl]Cl (1) and [(Cy2PO)C7H11N2Cl]Cl (2) with 1/2 equivalent of [Ru(eta(6)-p-cymene)(mu-Cl)Cl](2) in anhydrous ... -
Transition metals of arene derivatives with functionalized ionic liquid: DFT investigation, biological applications and electrochemical behavior of complexes
Rafikova, Khadichakhan; Meric, Nermin; Guzel, Remziye; Arslan, Nevin; Binbay, Nil Ertekin; Kayan, Cezmi; Okumus, Veysi (Elsevier Science Sa, 2022)Mononuclear transition metal complexes based on ionic liquid have been prepared and characterized in detail. The biological properties of the three complexes were evaluated using radical scavenging activity, reducing power, ...
