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Articles (35)
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Spectrophotometric total reducing sugars assay based on cupric reduction

Başkan, Kevser Sözgen, Tütem, Esma, Akyüz, Esin, Özen, Seda, Apak, Reşat

Journal:

Talanta

Année:

2016

Langue:

english

Fichier:

PDF, 552 KB

english, 2016

A comprehensive review of CUPRAC methodology

Özyürek, Mustafa, Güçlü, Kubilay, Tütem, Esma, Başkan, Kevser Sözgen, Erçağ, Erol, Esin Çelik, S., Baki, Sefa, Yıldız, Leyla, Karaman, Şeyda, Apak, Reşat

Journal:

Analytical Methods

Année:

2011

Langue:

english

Fichier:

PDF, 540 KB

english, 2011

Preparation, characterization and usage of molecularly imprinted polymer for the isolation of quercetin from hydrolyzed nettle extract

Karaman Ersoy, Şeyda, Tütem, Esma, Sözgen Başkan, Kevser, Apak, Reşat, Nergiz, Cevdet

Journal:

Journal of Chromatography B

Année:

2016

Langue:

english

Fichier:

PDF, 795 KB

english, 2016

Modified cupric reducing antioxidant capacity (CUPRAC) assay for measuring the antioxidant capacities of thiol-containing proteins in admixture with polyphenols

Sema Demirci Çekiç, Kevser Sözgen Başkan, Esma Tütem, Reşat Apak

Journal:

Talanta

Année:

2009

Langue:

english

Fichier:

PDF, 334 KB

english, 2009

Processing and Impact on Antioxidants in Beverages || Off-Line HPLC Integrated to Total Antioxidant Capacity Measurement of Beverages

Tütem, Esma

Année:

2014

Langue:

english

Fichier:

PDF, 417 KB

english, 2014

Novel Protein-Based Solid-Biosensor for Determining Pro-oxidant Activity of Phenolic Compounds

Akyüz, Esin, Başkan, Kevser Sözgen, Tütem, Esma, Apak, Reşat

Journal:

Journal of Agricultural and Food Chemistry

Année:

2017

Langue:

english

Fichier:

PDF, 1.24 MB

english, 2017

Simultaneous spectrophotometric determination of cystine and cysteine in amino acid mixtures using copper(II)—neocuproin reagent

Esma Tütem, Reşat Apak

Journal:

Analytica Chimica Acta

Année:

1991

Langue:

english

Fichier:

PDF, 429 KB

english, 1991

The interaction of antitumor-active anthraquinones with biologically important redox couples: I. Spectrophotometric investigation of the interaction of carminic acid and mitoxantrone with the iron(II, III) and copper(I, II) redox couples

Esma Tütem, Reşat Apak, Kevser Sözgen

Journal:

Journal of Inorganic Biochemistry

Année:

1996

Langue:

english

Fichier:

PDF, 891 KB

english, 1996

Comparison of total antioxidant capacity and phenolic composition of some apple juices with combined HPLC–CUPRAC assay

Şeyda Karaman, Esma Tütem, Kevser Sözgen Başkan, Reşat Apak

Journal:

Food Chemistry

Année:

2010

Langue:

english

Fichier:

PDF, 464 KB

english, 2010

Use of the molybdenum–thiocyanate–rhodamine 6G ternary complex for spectrophotometric molybdenum determination without extraction

Hayati Filik, Esma Tütem, Reşat Apak

Journal:

Analytica Chimica Acta

Année:

2004

Langue:

english

Fichier:

PDF, 96 KB

english, 2004

Spectrophotometric determination of gallium(III) with carminic acid and hexadecylpyridinium chloride

Hayati Filik, Esma Tütem, Reşat Apak, Erol Erçağ

Journal:

Microchimica Acta

Année:

1998

Langue:

english

Fichier:

PDF, 597 KB

english, 1998

Comparison of antioxidant capacity and phenolic composition of peel and flesh of some apple varieties

Şeyda Karaman, Esma Tütem, Kevser Sözgen Başkan, Reşat Apak

Journal:

Journal of the Science of Food and Agriculture

Année:

2012

Langue:

english

Fichier:

PDF, 205 KB

english, 2012

Second derivative spectrophotometric method for simultaneous determination of cobalt, nickel and iron using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol

Kevser Sözgen, Esma Tütem

Journal:

Talanta

Année:

2004

Langue:

english

Fichier:

PDF, 86 KB

english, 2004

Erratum to “Second derivative spectrophotometric method for simultaneous determination of cobalt, nickel and iron using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol” [Talanta 62 (2004) 971–976]

Kevser Sözgen, Esma Tütem

Journal:

Talanta

Année:

2005

Fichier:

PDF, 27 KB

2005

Spectrophotometric determination of ascorbic acid using copper(II)–neocuproine reagent in beverages and pharmaceuticals

Kubilay Güçlü, Kevser Sözgen, Esma Tütem, Mustafa Özyürek, Reşat Apak

Journal:

Talanta

Année:

2005

Langue:

english

Fichier:

PDF, 102 KB

english, 2005

Spectrophotometric total protein assay with copper(II)–neocuproine reagent in alkaline medium

Kevser Sözgen, Sema Demirci Cekic, Esma Tütem, Resat Apak

Journal:

Talanta

Année:

2006

Langue:

english

Fichier:

PDF, 212 KB

english, 2006

Combined HPLC-CUPRAC (cupric ion reducing antioxidant capacity) assay of parsley, celery leaves, and nettle

Leyla Yıldız, Kevser Sözgen Başkan, Esma Tütem, Reşat Apak

Journal:

Talanta

Année:

2008

Langue:

english

Fichier:

PDF, 467 KB

english, 2008

Simultaneous derivative spectrophotometric determination of cobalt(II) and nickel(II) by dithizone without extraction

Birsen Demirata Öztürk, Hayati Filik, Esma Tütem, Reşat Apak

Journal:

Talanta

Année:

2000

Langue:

english

Fichier:

PDF, 102 KB

english, 2000

Spectrophotometric determination of vitamin E (α-tocopherol) using copper(II)-neocuproine reagent

Esma Tütem, Reşat Apak, Esma Günaydı, Kevser Sözgen

Journal:

Talanta

Année:

1997

Langue:

english

Fichier:

PDF, 528 KB

english, 1997

Heavy metal cation retention by unconventional sorbents (red muds and fly ashes)

Reşat Apak, Esma Tütem, Mehmet Hügül, Jülide Hizal

Journal:

Water Research

Année:

1998

Langue:

english

Fichier:

PDF, 774 KB

english, 1998

Adsorptive removal of chlorophenols from water by bituminous shale

Esma Tütem, Reşat Apak, Çaǧatay F. Ünal

Journal:

Water Research

Année:

1998

Langue:

english

Fichier:

PDF, 366 KB

english, 1998

Sorptive Removal of Cesium-137 and Strontium-90 from Water by Unconventional Sorbents. I. Usage of Bauxite Wastes (Red Muds)

APAK, Reşat, ATUN, Gülten, GÜÇLÜ, Kubilay, TÜTEM, Esma, KESKİN, Güneş

Journal:

Journal of Nuclear Science and Technology

Année:

1995

Langue:

english

Fichier:

PDF, 703 KB

english, 1995

Spectrophotometric and Chromatographic Assessment of Contributions of Carotenoids and Chlorophylls to the Total Antioxidant Capacities of Plant Foods

Sözgen Başkan, Kevser, Tütem, Esma, Özer, Nihat, Apak, Reşat

Journal:

Journal of Agricultural and Food Chemistry

Année:

2013

Langue:

english

Fichier:

PDF, 935 KB

english, 2013

Protein–Incorporated Serum Total Antioxidant Capacity Measurement by a Modified CUPRAC (CUPRIC Reducing Antioxidant Capacity) Method

Çekiç, Sema Demirci, Kara, Nilay, Tütem, Esma, Başkan, Kevser Sözgen, Apak, Reşat

Journal:

Analytical Letters

Année:

2012

Langue:

english

Fichier:

PDF, 145 KB

english, 2012

The logarithmic diagram for the uranyl-carbonate-hydroxide complex equilibria

Tutem, Esma, Apak, Resat, Turgut, Mehmet Hulusi, Apak, Vildan

Journal:

Journal of Chemical Education

Année:

1991

Langue:

english

Fichier:

PDF, 2.21 MB

english, 1991

Heavy metal removal from water by red mud and coal fly ash: an integrated adsorption–solidification/stabilization process

Hizal, Julide, Tutem, Esma, Guclu, Kubilay, Hugul, Mehmet, Ayhan, Sertac, Apak, Resat, Kilinckale, Fahriye

Journal:

DESALINATION AND WATER TREATMENT

Année:

2013

Langue:

english

Fichier:

PDF, 271 KB

english, 2013

Spectrophotometric Determination of Ascorbic acid in Pharmaceutical Products with the Copper(II)-rhodanine Reagent

Tütem, Esma, Ülküseven, Bahri, Apak, Reeat

Journal:

Analytical Letters

Année:

1992

Langue:

english

Fichier:

PDF, 478 KB

english, 1992

Sorptive Removal of Cesium-137 and Strontium-90 from Water by Unconventional Sorbents

APAK, Reşat, ATUN, Gülten, GÜÇLÜ, Kubilay, TÜTEM, Esma

Journal:

Journal of Nuclear Science and Technology

Année:

1996

Langue:

english

Fichier:

PDF, 741 KB

english, 1996

Determination of total antioxidant capacity of milk by CUPRAC and ABTS methods with separate characterisation of milk protein fractions

Çekiç, Sema Demirci, Demir, Aslı, Sözgen Başkan, Kevser, Tütem, Esma, Apak, Reşat

Journal:

Journal Dairy Research

Année:

2015

Langue:

english

Fichier:

PDF, 185 KB

english, 2015

Assessment of the contributions of anthocyanins to the total antioxidant capacities of plant foods

Başkan, Kevser Sözgen, Tütem, Esma, Akyüz, Esin, Apak, Reşat

Journal:

European Food Research and Technology

Année:

2015

Langue:

english

Fichier:

PDF, 860 KB

english, 2015

Spectrophotometric Determination of Gallium(III) with Rutin.

FILIK, Hayati, DOGUTAN, Melek, TÜTEM, Esma, APAK, Resat

Journal:

Analytical Sciences

Année:

2002

Langue:

english

Fichier:

PDF, 37 KB

english, 2002

Sorptive Removal of Cesium-137 and Strontium-90 from Water by Unconventional Sorbents.II. Usage of Coal Fly Ash.

APAK, Resat, ATUN, Gulten, GUCLU, Kubilay, TUTEM, Esma

Journal:

Journal of Nuclear Science and Technology

Année:

1996

Langue:

english

Fichier:

PDF, 771 KB

english, 1996

Protein-Protected Gold Nanocluster-Based Biosensor for Determining the Prooxidant Activity of Natural Antioxidant Compounds

Akyüz, Esin, Şen, Furkan Burak, Bener, Mustafa, Başkan, Kevser Sözgen, Tütem, Esma, Apak, Reşat

Journal:

ACS Omega

Année:

2019

Langue:

english

Fichier:

PDF, 1.69 MB

english, 2019

Valorization of Red Onion Peels for Quercetin Recovery Using Quercetin-Imprinted Polymer

Ersoy, Şeyda Karaman, Tütem, Esma, Başkan, Kevser Sözgen, Apak, Reşat

Journal:

Journal of Chromatographic Science

Année:

2019

Fichier:

PDF, 1.04 MB

2019

Novel Iron(III)−Induced Prooxidant Activity Measurement Using a Solid Protein Sensor in Comparison with a Copper(II)−Induced Assay

Akyüz, Esin, Başkan, Kevser Sözgen, Tütem, Esma, Apak, Reşat

Journal:

Analytical Letters

Année:

2020

Langue:

english

Fichier:

PDF, 1.72 MB

english, 2020