Browsing Τμήμα Χημείας / Department of Chemistry by Author "Kapnissi‐Christodoulou, Constantina P."
Now showing items 21-40 of 44
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Enantioanalysis of pipecolic acid with stochastic and potentiometric microsensors
Stefan-Van Staden, R. -I; Moldoveanu, I.; Sava, D. -F; Kapnissi‐Christodoulou, Constantina P.; Van Staden, J. F. (2013)Stochastic and potentiometric microsensors based on porphyrins and polymeric surfactants such as polysodium N-undecanoyl- l-leucylvanilate and polysodium N-undecanoyl- l-vanilate were developed for enantioselective assay ...
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Article
Enantioanalysis of Pipecolic Acid with Stochastic and Potentiometric Microsensors
Stefan‐van Staden, Raluca‐Ioana; Moldoveanu, Iuliana; Sava, Daniel‐Florin; Kapnissi‐Christodoulou, Constantina P.; van, Jacobus Frederick (2012)
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Enantioseparations in open-tubular capillary electrochromatography: Recent advances and applications
Kapnissi‐Christodoulou, Constantina P.; Nicolaou, Athina G.; Stavrou, Ioannis J. (2016)This review highlights recent advances and applications in open-tubular capillary electrochromatography (OT-CEC) for enantioseparations during the last decade. Although extensive research has been conducted in the area of ...
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Evaluation of amino acid ester-based ionic liquids as buffer additives in CE for the separation of 2-arylpropionic acids nonsteroidal anti-inflammatory drugs
Mavroudi, Maria C.; Kapnissi‐Christodoulou, Constantina P. (2014)The aim of the present study is the CE performance evaluation for the separation of 2-arylpropionic acid nonsteroidal anti-inflammatory drugs. In particular, the separation of indoprofen, carprofen, ketoprofen, ibuprofen, ...
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Facile preparation of polysaccharide-coated capillaries using a room temperature ionic liquid for chiral separations
Stavrou, Ioannis J.; Moore, L.; Fernand, V. E.; Kapnissi‐Christodoulou, Constantina P.; Warner, I. M. (2013)In this study, the dissolution of polysaccharides into an ionic liquid was investigated and applied as a coating onto the capillary walls of a fused-silica capillary in open-tubular CEC. The coating was evaluated by examining ...
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Facile preparation of polysaccharide‐coated capillaries using a room temperature ionic liquid for chiral separations
Stavrou, Ioannis J.; Moore, Leonard; Fernand, Vivian E.; Kapnissi‐Christodoulou, Constantina P.; Warner, Isiah M. (2013)
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Fast Screening of Whole Blood Samples and Pharmaceutical Compounds for Enantiorecognition of Free L-T3, L-T4, and D-T4
Mitrofan, Grigorina; Stefan-Van Staden, R. -I; Comnea‐Stancu, Ionela Raluca; Van Staden, J. F.; Bazylak, Grzegorz O.; Kapnissi‐Christodoulou, Constantina P.; Aboul‐Enein, Hassan Y. (2015)A fast screening method of whole blood was proposed for enantiorecognition of free L-T3, L-T4, and D-T4. Stochastic microsensors based on four inulins (IN, IQ, TEX, and HD) immobilized on diamond paste (DP) were used for ...
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Fast Screening of Whole Blood Samples and Pharmaceutical Compounds for Enantiorecognition of Free L‐T3, L‐T4, and D‐T4
Mitrofan, Grigorina; Stefan‐van Staden, Raluca‐Ioana; Comnea‐Stancu, Ionela Raluca; van Staden, Jacobus Frederick; Bazylak, Grzegorz O.; Kapnissi‐Christodoulou, Constantina P.; Aboul‐Enein, Hassan Y. (2015)
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Investigation of the stability of polyelectrolyte multilayer coatings in open-tubular capillary electrochromatography using laser scanning confocal microscopy
Kapnissi‐Christodoulou, Constantina P.; Lowry, M.; Agbaria, R. A.; Geng, L.; Warner, I. M. (2005)A simple polyelectrolyte multilayer (PEM) coating procedure was used for the development of stable modified capillaries. PEM coatings were constructed in fused-silica capillaries using alternating rinses of cationic and ...
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Ionic liquids for the molecular enantiorecognition of free l-T3, l-T4 and d-T4
Stefan-Van Staden, R. -I; Mitrofan, Grigorina; Comnea‐Stancu, Ionela Raluca; Van Staden, J. F.; Kapnissi‐Christodoulou, Constantina P.; Aboul‐Enein, Hassan Y. (2015)Ionic liquids were proposed for the molecular enantiorecognition of free l-T3, l-T4 and d-T4. l-Phenylalanine tert-butyl ester lactate (l-PheC4-Lac), l-alanine tert-butyl ester l-lactate (l-AlaC4-Lac) and l-alanine tert-butyl ...
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Ionic liquids for the molecular enantiorecognition of free l-T3, l-T4 and d-T4
Stefan-van Staden, Raluca-Ioana; Mitrofan, Grigorina; Comnea‐Stancu, Ionela Raluca; van Staden, Jacobus Frederick; Kapnissi‐Christodoulou, Constantina P.; Aboul‐Enein, Hassan Y. (2015)
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Novel approach to fast determination of cholesterol oxidation products in Cypriot foodstuffs using ultra-performance liquid chromatography-tandem mass spectrometry
Georgiou, Christiana A.; Constantinou, Michalis S.; Andreou, Rafaella; Hapeshi, Evroula; Fatta‐Kassinos, Despo; Kapnissi‐Christodoulou, Constantina P. (2016)This paper reports the development and validation of a new method based on ultra-performance LC coupled to MS/MS for the simultaneous determination of four cholesterol oxidation products (COPs) in foodstuffs in only 4.1 ...
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Novel approach to fast determination of cholesterol oxidation products in Cypriot foodstuffs using ultra‐performance liquid chromatography‐tandem mass spectrometry
Georgiou, Christiana A.; Constantinou, Michalis S.; Andreou, Rafaella; Hapeshi, Evroula; Fatta‐Kassinos, Despo; Kapnissi‐Christodoulou, Constantina P.; Klampfl, Christian W. (2015)
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Article
Open-tubular capillary electrochromatography using a polymeric surfactant coating
Kamande, M. W.; Kapnissi‐Christodoulou, Constantina P.; Zhu, X.; Akbay, C.; Warner, I. M. (2003)A stable polyelectrolyte multilayer (PEM) coating was investigated for use in open-tubular capillary electrochromatography (o-CEC). In this approach, the PEM consisted of the cationic polymer of a quaternary ammonium salt, ...
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Article
Open-tubular capillary electrochromatography/electrospray ionization-mass spectrometry using polymeric surfactant as a stationary phase coating
Zhu, X.; Kamande, M. W.; Thiam, S.; Kapnissi‐Christodoulou, Constantina P.; Mwongela, S. M.; Warner, I. M. (2004)We describe the use of the polymeric surfactant poly(sodium undecylenic sulfate) (poly-SUS) as a stationary phase coating in open-tubular capillary electrochromatog raphy (OT-CEC) coupled with electrospray ionization-mass ...
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Qualitative and quantitative determination of COPs in cypriot meat samples using HPLC determination of the most effective sample preparation procedure
Georgiou, Christiana A.; Kapnissi‐Christodoulou, Constantina P. (2013)This research work describes the development of a fast high-performance liquid chromatography method for the simultaneous determination of five important cholesterol oxidation products (COPs). The influence of various ...
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Sample preparation: A critical step in the analysis of cholesterol oxidation products
Georgiou, Christiana A.; Constantinou, Michalis S.; Kapnissi‐Christodoulou, Constantina P. (2014)In recent years, cholesterol oxidation products (COPs) have drawn scientific interest, particularly due to their implications on human health. A big number of these compounds have been demonstrated to be cytotoxic, mutagenic, ...
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Separation of acetylcholinesterase inhibitors using polymeric surfactants in polyelectrolyte multilayer coatings
Constantinou, A. S.; Nicolaou, I. N.; Kapnissi‐Christodoulou, Constantina P. (2012)The main objective of this study is the use of polymeric surfactants in polyelectrolyte multilayer (PEM) coatings for the separation of the pharmaceutical substances acetylcholinesterase inhibitors (AChEIs). AChEIs are ...
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Separation of benzodiazepines using capillary electrochromatography
Kapnissi‐Christodoulou, Constantina P.; Warner, I. M. (2004)Benzodiazepines are often used for the treatment of epilepsy, convulsions, and many psychiatric disorders. The widespread use of this class of drugs has occasionally raised concern about recreational benzodiazepine abuse ...
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Simultaneous determination of nine acetylcholinesterase inhibitors using micellar electrokinetic chromatography
Nicolaou, I. N.; Kapnissi‐Christodoulou, Constantina P. (2011)MEKC was used for the separation of nine acetylcholinesterase inhibitors (AChEIs). AChEIs are an important group of drug compounds that are used medicinally to treat Alzheimer's disease and Myasthenia Gravis. At the time ...