Yazar "Uysal, Ülkü Dilek" için listeleme
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Separation of catechins and methylxanthines in tea samples by capillary electrochromatography
Uysal, Ülkü Dilek; Aturki, Z.; Raggi, M. A.; Fanall, S. (2009)In this paper, the simultaneous separation of several polyphenols such as (+)-catechin, (-)-epicatechin, (-)-epigallocatechin, theophylline, caffeine in green and black teas by capillary electrochromatography (CEC) was ... -
A Survey Study for the Metal Analysis by ICP-OES in Baby Foods
Uysal, Ülkü Dilek; Tuncel, Muzaffer; Öncü, Elif Mine (Anadolu Üniversitesi, 2008)This study describes the survey results of baby foods regarding metal analysis in twenty six samples. Metal content or contaminants (Fe, Cu, Zn, Pb, Hg and As) were examined by measuring inductively coupled plasma-optical ... -
Theoretical Investigation of Certain Tea Compounds in Aqueous and Blood Phases
Uysal, Ülkü Dilek; Berber, Halil; Öncü Kaya, Elif Mine (Anadolu Üniversitesi, 2012)In this study, certain theoretical properties of tea compounds, such as acidity constant, stability, reactivity, geometry and energy have been calculated prior to laboratory studies to understand the basic principles ... -
A Theoretical Study on Proton-Gain Behaviors of Some Azaindole Derivatives
Çalış, Sevgül; Berber, Halil; Uysal, Ülkü Dilek; Öğretir, Cemil (Anadolu Üniversitesi, 2011)The acidities, relative stabilities (RS), nucleophilicities (Ƞ ) and proton affinities (PA) of seven azaindole molecules were determined in both gas and liquid phases using semi-empirical AM1, PM3 and PM5 methods. The ... -
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 ...