Kurum Yazarı "Uysal, Ülkü Dilek" WoS İndeksli Yayınlar Koleksiyonu İçin Listeleme
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Determination of DNA in Certain Salvia Species by Capillary Gel Electrophoresis
Öncü-Kaya, Elif Mine; Uysal, Ülkü Dilek; Öztürk, Nilgün; Cenkci, Süleyman; Tunçel, Muzaffer (Taylor & Francis Inc, 2015)This article presents a newly developed capillary gel electrophoresis (CGE) using dynamic coating with hydroxyethylcellulose methodology for the separation of fourteen standard DNA fragments and determination of RAPD-PCR ... -
Determination of Folic Acid by CE in Various Cultivated Variety of Lentils
Uysal, Ülkü Dilek; Öncü Kaya, Elif Mine; Tunçel, Muzaffer (Springer Heidelberg, 2010)A simple extraction and determination method for folic acid (FA) in lentil samples was developed employing capillary electrophoresis. The analysis was performed in a 75 mu m ID fused silica capillary using a running buffer ... -
Determination of parabens in pharmaceutical and cosmetic products by capillary electrophoresis
Uysal, Ülkü Dilek; Güray, T. (Maik Nauka/Interperiodica/Springer, 2008)A validated capillary electrophoresis method for the determination of parabens-methyl, ethyl, propyl, and butyl is described. The optimum results were obtained by the use of a run buffer containing 20 mM borate buffer (pH ... -
Determination of Rosmarinic Acid by High-Performance Liquid Chromatography and Its Application to Certain Salvia Species and Rosemary
Öztürk, Nilgün; Tunçel, Muzaffer; Uysal, Ülkü Dilek; Öncü-Kaya, Elif Mine; Koyuncu, Onur (Springer, 2011)This study describes a method development for the determination of rosmarinic acid (RA) by using a gradient high-performance liquid chromatography (HPLC) and its application to certain plant materials. The analysis was ... -
Determination of Zearalenone By the Capillary Zone Electrophoresis-Uv Detection and Its Application to Poultry Feed and Cereals
Güray, Tufan; Tunçel, Muzaffer; Uysal, Ülkü Dilek; Öncü-Kaya, Elif Mine (Taylor & Francis Inc, 2013)A capillary zone electrophoretic method for the determination of zearalenone is described in this study. In the separation, a run buffer consisting of 20mM sodium tetraborate at pH 9.0 with 15% acetonitrile applying 15kV, ... -
HPLC fluorescence determination of ochratoxin A utilizing a double internal standard and its application to poultry feed
Tunçel, Muzaffer; Öncü Kaya, Elif Mine; Uysal, Ülkü Dilek; Güray, Tufan (Scientific Technical Research Council Turkey-Tubitak, 2015)A validated liquid chromatography method employing a fluorescence detector for the determination of ochratoxin A (OTA) was developed with double internal standard and it was applied to ten different poultry feeds. The ... -
A Rapid Determination of Patulin Using Capillary Zone Electrophoresis and its Application to Analysis of Apple Juices
Güray, Tufan; Tunçel, Muzaffer; Uysal, Ülkü Dilek (Oxford University Press Inc, 2013)This study describes a capillary zone electrophoretic method for the determination of patulin. An optimum run buffer was found to be 25 mM of sodium tetraborate and 10% acetonitrile (v/v) at pH 10. Optimum conditions were ... -
Rapid direct spectrophotometric determination of zirconium(IV) in alloys with 2,2 ',3,4-tetrahydroxy-3 '-sulpho-5 '-carboxyazobenzene reagent
Uysal, Ülkü Dilek; Hüseyinli, A. Ali; Güray, Tufan (Natl Inst Science Communication-Niscair, 2011)In this study, 2, 2, 3, 4-tetrahydroxy-3'-sulpho-5'-carboxyazobenzene (tetrahydroxyazon SC) has been synthesized for the first time and used for direct spectrophotometric determination of zirconium(IV). Tetrahydroxyazon ... -
A Semi-Empirical and Density Functional Theory Study of 2,2 ',3,4-Tetrahydroxy-3 '-sulpho Azobenzene Derivatives and Their Zirconium Complexes
Uysal, Ülkü Dilek (Asian Journal Of Chemistry, 2013)In this study, certain theoretical properties of three tetrahydroxyazo derivatives and their zirconium complexes, such as stability, reactivity, geometry and energy have been calculated by MOPAC2009 with the PM6 method and ... -
Time and temperature dependent microbiological and mycotoxin (ochratoxin-A) levels in boza
Uysal, Ülkü Dilek; Öncü Kaya, Elif Mine; Berikten, Derya; Yılmaz, Neşe; Tuncel, Necati Barış; Kıvanç, Merih; Tuncel, Muzzaffer (Elsevier Science BV, 2009)This study describes the examination of microbiological tests and the determination of OTA in boza temperature and time dependently. Prior to the analysis, physicochemical properties of the boza samples such as moisture, ... -
A validated capillary electrophoretic method for the determination of indacaterol and its application to a pharmaceutical preparation
Güray, Tufan; Tunçel, Muzaffer; Uysal, Ülkü Dilek (Food & Drug Adminstration, 2018)Indacaterol is a new inhaled ultra-long acting beta(2)-agonist. It has been recently approved in the European Union for the treatment of chronic obstructive pulmonary disease. This paper reports, for the first time, a ... -
A Validated Capillary Electrophoretic Method for the Determination of Olopatadine and Its Application to a Pharmaceutical Preparation of Eye Drops
Güray, Tufan; Turan, Tuğba; Tunçel, Muzaffer; Uysal, Ülkü Dilek (Aoac Int, 2017)A validated rapid and sensitive capillary zone electrophoretic method for the determination of olopatadine hydrochloride (OLO) is described. Optimum conditions were found: 20 mmol/L sodium tetraborate buffer, acetonitrile ...