Results 171 to 180 of about 3,038 (194)

A comprehensive review of CUPRAC methodology

Analytical Methods, 2011
Measuring the antioxidant activity/capacity levels of food and biological fluids is carried out for the meaningful comparison of the antioxidant content of foodstuffs and for the diagnosis and treatment of oxidative stress-associated diseases in clinical biochemistry.
Mustafa Özyürek, Kubilay Güçlü, Esma Tütem, Kevser Sözgen Başkan, Erol Erçağ, S. Esin Çelik, Sefa Baki, Leyla Yıldız, Şeyda Karaman, Reşat Apak   +9 more
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The main and modified CUPRAC methods of antioxidant measurement

TrAC Trends in Analytical Chemistry, 2011
Abstract The antioxidant activity/capacity levels of biological fluids and foods are measured for the diagnosis and the treatment of oxidative stress-associated diseases in clinical biochemistry, and for meaningful comparison of the antioxidant content of foods.
Mustafa Özyürek, Kubilay Güçlü, Reşat Apak   +2 more
openaire   +1 more source

Direct measurement of total antioxidant capacity of cereals: QUENCHER-CUPRAC method

Talanta, 2013
Polyphenols in cereal samples are distributed as free, soluble-esterified, and insoluble-bound forms either esterified or etherified to cell wall constituents. In the evaluation of total antioxidant capacity (TAC) of cereals, rather difficult and time-consuming acid, alkaline and enzymatic treatments of residue have been applied to complete the ...
Ayşe Nur, Tufan, S Esin, Celik, Mustafa, Ozyürek, Kubilay, Güçlü, Reşat, Apak   +4 more
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Heparin-stabilized gold nanoparticles-based CUPRAC colorimetric sensor for antioxidant capacity measurement

Talanta, 2018
Sensing of total antioxidant capacity (TAC) as an integrated parameter showing the collective action of various antioxidants is an important challenge in food, biochemical and drug analysis. A novel heparin-stabilized gold nanoparticles (AuNPs)-based 'cupric reducing antioxidant capacity' (CUPRAC) colorimetric sensor was designed for TAC measurement ...
Mustafa, Bener, Furkan Burak, Şen, Reşat, Apak   +2 more
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Development of an Electrochemical Cupric Reducing Antioxidant Capacity Method (CUPRAC) for Antioxidant Analysis

Electrochimica Acta, 2014
Abstract Cupric Reducing Antioxidant Capacity method, CUPRAC, is a reliable assay for determining Total Antioxidant Capacity (TAC) in samples of foods, beverages and pharmaceutical formulations. In this work, an electrochemical approach was used to quantify antioxidant content employing a variation of the CUPRAC assay, as the concentrations of the ...
Arely Cárdenas, Martín Gómez, Carlos Frontana   +2 more
openaire   +1 more source

CUPRAC colorimetric and electroanalytical methods determining antioxidant activity based on prevention of oxidative DNA damage

Analytical Biochemistry, 2017
An unbalanced excess of oxygen/nitrogen species (ROS/RNS) can give oxidative hazard to DNA and other biomacromolecules under oxidative stress conditions. While the 'comet' assay for measuring DNA damage is neither specific nor practical, monitoring oxidative changes on individual DNA bases and other oxidation products needs highly specialized equipment
Uzunboy, Seda, Cekic, Sema Demirci, Eksin, Ece, Erdem, Arzum, Apak, Resat   +4 more
openaire   +2 more sources