Browsing by Author "Tokay, Feyzullah"
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Assessment of element partitioning in dairy products: application of three stage sequential fractionation scheme and metal determination by ıcp-oes
Tokay, Feyzullah; Baran, Eda Köse; Bağdat, Sema (Bentham Science Publ Ltd, 2018)Background: Availability of minerals in foodstuff depends on their physicochemical form. This study was conducted to determine the concentration and partitioning of Fe, Cu, Zn, Mn, Mg, Ca, Cr, Ni, Mo, Al, Ba, Pb, Sn, V, ... -
Bazı metal iyonlarının n,n'- bis-(4-metoksisalisiliden) etilendiamin modifiye silika jel ile önderiştirilmesi ve alevli atomik absorpsiyon spektrometresi ile tayini
Tokay, Feyzullah (Balıkesir Üniversitesi Fen Bilimleri Enstitüsü, 2014)Çalışma kapsamında, N,N'-bis(4-metoksisalisiliden) etilendiamin (MSE) Schiff bazı modifiye edilmiş silika jel (Si-MSE) ile Fe(III), Cu(II), Mn(II), Zn(II), Ni(II), Cr(III), Co(II), Cd(II) ve Pb(II) iyonlarının doğal su ... -
Boyar madde modifiye silika jel kullanılarak Cd(II) ve Pb(II) iyonlarının önderiştirilmesi
Çil, Gülçin (Balıkesir Üniversitesi Fen Bilimleri Enstitüsü, 2024)Bu çalışmada, silika jel, Coomassie brilliant blue G-250 (Asit mavisi 90) boyar maddesi ile fiziksel olarak modifiye edilmiş (Si-CBB) ve doğal su örneklerinde eser düzeyde bulunan Cd(II) ve Pb(II) iyonlarının ayrılması ve ... -
Determination of iron and copper in edible oils by flame atomic absorption spectrometry after liquid-liquid extraction
Tokay, Feyzullah; Bağdat, Sema (Springer, 2015)In the present work, a novel and rapid extraction method for Fe(III) and Cu(II) from liquid edible oils is described. N,N'-Bis(4-methoxysalicylidene)-1,2-diamino ethane (MSE) was utilized for the extraction of metal ions ... -
Determination of ni and zn in an oil matrix using schiff base-assisted extraction followed by a flame atomic absorption spectrometer: a simple strategy to determine ni and zn
Karan, Arda; Tokay, Feyzullah; Bağdat, Sema (Wiley, 2018)In the present work, a new and simple Schiff base-assisted extraction strategy for Ni and Zn from an edible oil matrix with subsequent determination using a flame atomic absorption spectrometer was suggested. According to ... -
Determination of some elements in canned and frozen vegetables sold in balıkesir (Türkiye) markets and nutritional assessment
Tokay, Feyzullah (Adıyaman Üniversitesi, 2022)In this work, determination of some elements including Pb, Ni, Ba, Fe, Zn, Mg, Mn, Al, Cu, Mo, Ca, B, Cr, Cd, V and Co was carried out in some canned and frozen vegetable samples sold in Balıkesir, Türkiye. The study ... -
Development of UV-Vis spectrophotometric method for rapid nickel determination in original oil matrix
Tokay, Feyzullah (2017)A novel method for the determination of nickel in edible oils was proposed. The suggested procedure was on the basis of complexation of N, N’- bis(4-methoxysalicylidene) ethylenediamine and nickel in oily media and UVVisible ... -
Element fractionation analysis for infant formula and food additives by inductively coupled plasma optical emission spectrometry
Bağdat, Sema; Baran, Eda Köse; Tokay, Feyzullah (Wiley, 2014)Fractionation analyses are essential to investigate the effects of dietary constituents on bioavailability of elements. A sequential separation procedure has been applied for elemental fractionation patterns in infant ... -
Element fractionation analysis for milk in its real matrix by inductively coupled plasma optical emission spectrometry
Yaşar, Sema Bağdat; Baran, Eda Köse; Tokay, Feyzullah (Taylor & Francis Ltd, 2013)Fractionation of elements in food is essential for understanding and prediction of its bioavailability, effects, and toxicity. In the present study, an analytical fractionation scheme for milk samples was developed for the ... -
Elemental distribution and fatty acid profile of raw goat milk: effect of dietary olive pellets on milk nutritional value
Tokay, Feyzullah; Bağdat, Sema (Bentham Science Publ Ltd, 2018)Background: Milk is one of the important drinks for human and serves many nutrients including trace elements required for growth. In terms of prediction of element availability in food, fractionation analysis is helpful ... -
Extraction of nickel from edible oils with a complexing agent prior to determination by FAAS
Tokay, Feyzullah; Bağdat, Sema (Elsevier Sci Ltd, 2016)In the present work, a new extraction method for separation of nickel from edible oils and determination by FAAS is reported. This method is based on extraction of Ni(II) ions from the oil to aqueous phase with ... -
Hibrit gümüş nanoparçacık komplekslerinin sitotoksik ve antilayşmanyal aktivitesinin araştırılması: Leishmania türlerine karşı potansiyel ilaç adayları
Özel, Yener; Çavuş, İbrahim; Yılmaz, Umut; Tokay, Feyzullah; Bağdat, Sema; Özbilgin, Ahmet; Ünlü, Mehmet; Ünlü, Gülhan Vardar (Bilimsel Tıp Yayınevi, 2024)Son yıllarda mevcut ilaçlara dirençli Leishmania türlerinin izole edilmesi, ilaç adayı olabilecek alternatif moleküllerin araştırılmasını zorunlu hale getirmiştir. Bu çalışmada, hibrit gümüş nanoparçacık (AgNP) komplekslerinin ... -
[N,N'-bis(4-metoksisalisiden)-1,2-diaminoetan] ligandı kullanılarak zeytinyağından bakır, demir, nikel, çinko metallerinin ekstraksiyonu ve FAAS ile tayini
Tokay, Feyzullah (Balıkesir Üniversitesi Fen Bilimleri Enstitüsü, 2009)Bu çalışmada 4-metoksi-2-hidroksibenzaldehit ve etilendiaminin kondenzasyon tepkimesi sonucu oluşan N,N'-bis(4 metoksisalisiliden)-1,2 diamino etan(MSE) Schiff bazının metallerle kompleksleşme özelliklerinden yararlanarak ... -
A novel and simple approach to element fractionation analysis: Single step fractionation of milk
Tokay, Feyzullah; Bağdat, Sema (Elsevier Sci Ltd, 2022)A novel single step fractionation of cow's milk was achieved using ethyl ether, n-hexane and isopropyl alcohol (3:3:4) mixture via solubility difference and precipitation. Milks were separated into lipid, serum and protein ... -
A novel and validated chemical-enzymatic strontium fractionation method for wheat flour from celestite mining area: the first approach for sequential fractionation
Bağdat, Sema; Özkan, Mehmet Hikmet; Tokay, Feyzullah; Güçer, Şeref (Springer, 2019)In this study, a sequential Sr fractionation scheme was developed for wheat flour matrix. The lipid, water-soluble, and starch fractions were separated successfully. Total and fractionated Sr was determined by ICP-MS. The ... -
Novel and validated spectrophotometric matrix matching method for simple and rapid determination of chromium in oily media
Tokay, Feyzullah; Bağdat, Sema (Office Spectroscopy & Spectral Analysis,, 2016)N,N'-bis(4-methoxysalicylidene) ethylenediamine is proposed as analytical reagent for the direct determination of chromium in original matrix of liquid oils. The method is based on the complexation of N, N'-bis ... -
Orijinal yağ matriksinde hızlı nikel tayini için UV-Vis spektrofotometrik metot geliştirilmesi
Tokay, Feyzullah (2017)Bu çalışmada, yenilebilir yağlarda nikel tayini için yeni bir metot sunulmuştur. Önerilen prosedür, N, N'-bis(4-metoksisalisiliden) etilendiamin ve nikelin yağ ortamında kompleksleşmesi ve 396 nm'de UV-görünür bölgede ... -
Preconcentration and determination of metal ions using fluorescein-modified silica gel and inductively coupled plasma-optical emission spectrometry
Tokay, Feyzullah; Bağdat, Sema (Taylor & Francis Ltd, 2018)A new fluorescein modified silica gel was utilized for solid-phase extraction for the simultaneous and selective preconcentrations of Ba2+, Cd2+, Co2+, Cu2+, Mn2+, Ni2+, Pb2+, and Sr2+ prior todetermination by inductively ... -
Preconcentration of Cu(II), Co(II), and Ni(II) using an optimized enrichment procedure: useful and alternative methodology for flame atomic absorption spectrometry
Tokay, Feyzullah; Bağdat, Sema (Sage Publications Inc, 2016)In this paper, a new solid phase extraction procedure is described for Cu(II), Co(II), and Ni(II). Silica gel which was coated with N,N'-bis(4-methoxysalicylidene) ethylenediamine (MSE) is used as a sorbent. Three independent ... -
Removal of Cd(II), Co(II), Cr(III), Ni(II), Pb(II) and Zn(II) ions from wastewater using polyethyleneimine (PEI) cryogels
Bağdat, Sema; Tokay, Feyzullah; Demirci, Şahin; Yılmaz, Selehattin; Şahiner, Nurettin (Academic Press Ltd, 2022)The removal of the target analytes, Cd(II), Co(II), Cr(III), Ni(II), Pb(II), and Zn(II) from contaminated waters was achieved using super porous polyethyleneimine (PEI) cryogels as adsorbent. The optimum values of the ...
