Results 11 to 20 of about 6,112 (129)

In Vitro Cultures of Some Medicinal Plant Species (Cistus x incanus, Verbena officinalis, Scutellaria lateriflora, and Scutellaria baicalensis) as a Rich Potential Source of Antioxidants - Evaluation by CUPRAC and QUENCHER-CUPRAC Assays [PDF]

, 2021
Comparative estimations of the antioxidant activity of methanolic extracts from biomasses of different types of in vitro cultures of Cistus × incanus, Verbena officinalis, Scutellaria lateriflora, and S. baicalensis and also from plant raw materials were
Jolanta Biesaga-Kościelniak, El-Ansary, Diaa O., Halina Ekiert, Kwiecień, Inga, Paweł Kubica, Dziurka, Michał, Kubica, Paweł, Szopa, Agnieszka, Biesaga-Kościelniak, Jolanta, Agnieszka Szopa, Abdelmohsen, Shaimaa A.M., Hosam O. Elansary, Inga Kwiecień, Shaimaa A. M. Abdelmohsen, Fatemah F. Al-Harbi, Diaa O. El-Ansary, Michał Dziurka, Ekiert, Halina, Al-Harbi, Fatemah F., Elansary, Hosam O.   +19 more
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Design, Synthesis, and Biological Evaluation of Benzimidazol-2-One Hybrids as Potential Anti-Alzheimer's Disease Agents. [PDF]

Drug Dev Res
ABSTRACT Alzheimer's disease (AD) is a multifactorial neurodegenerative disorder for which single‐target therapies often provide insufficient benefit, motivating the development of multi‐target‐directed ligands (MTDLs). In this study, a novel series of benzimidazolone‐based hybrids incorporating piperazine, coumarin, and triazole moieties was designed,
Yılmaz F, Menteşe E, Eyüpoğlu OE, Kahveci B, Emirik M.   +4 more
europepmc   +2 more sources

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

, 2021
Polyphenols in cereal samples are distributed as free, soluble-esterified, and insoluble-bound forms either esterified or etherified to cell wall constituents.
Ozyurek, Mustafa, Tufan, Ayse Nur, Celik, S. Esin, Apak, Resat, Guclu, Kubilay   +4 more
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Phenolic Profiling and Bioactivity Evaluation of Stachys aleurites Extracts: LC-ESI-MS/MS Characterization, Antioxidant Capacity, and Enzyme Inhibitory Potential. [PDF]

Chem Biodivers
Solvent polarity shapes the phytochemical and bioactivity profile of Stachys aleurites. Methanol extraction enriches phenolics, especially verbascoside and chlorogenic acid, and enhances antioxidant and enzyme inhibitory activities, whereas the aqueous extract shows selective metal‐chelating and BChE inhibitory potential. ABSTRACT Natural products rich
Solmaz FOK, Sarikurkcu C, Tepe B.
europepmc   +2 more sources

Antioxidant capacity of fresh, sun- and sulphited-dried Malatya apricot (Prunus armeniaca) assayed by CUPRAC, ABTS/TEAC and folin methods

, 2021
Apricots as five varieties of Malatya region have been assayed as fresh, sun- and sulphited-dried samples, using the antioxidant capacity measurement methods Cupric Ion Reducing Antioxidant Capacity (CUPRAC) and 2,2'-azinobis (3-ethylbenzothiazoline-6 ...
Karademir, Saliha E., Ozyurek, Mustafa, Apak, Resat, ALTUN, Mehmet, Guclu, Kubilay   +4 more
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Development of a new catalase activity assay for biological samples using optical CUPRAC sensor

, 2021
novel catalase activity assay was developed for biological samples (liver and kidney tissue homogenates) using a rapid and low-cost optical sensor-based 'cupric reducing antioxidant capacity' (CUPRAC) method.
Ozyurek, Mustafa, Alkan, Fulya Ustun, Bekdeser, Burcu, Apak, Resat, Guclu, Kubilay   +4 more
core   +1 more source

Use of modified CUPRAC and dinitrophenylhydrazine colorimetric methods for simultaneous measurement of oxidative protein damage and antioxidant defense against oxidation

, 2022
A modified CUPRAC (cupric reducing antioxidant capacity) method was developed for the simultaneous estimation of protein oxidation and counteracting antioxidant defense, and the results were compared with those of a modified 2,4-dinitrophenylhydrazine ...
APAK, MUSTAFA REŞAT, Bayarsaikhan, Govigerel, DEMİRCİ ÇEKİÇ, SEMA, AVAN, ASLI NESLİHAN   +3 more
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CUPRAC colorimetric and electroanalytical methods determining antioxidant activity based on prevention of oxidative DNA damage

, 2021
An unbalanced excess of oxygen/nitrogen species (ROS/RNS) can give oxidative hazard to DNA and other biomacromolecules under oxidative stress conditions.
Uzunboy, Seda, Apak, Resat, Cekic, Sema Demirci, Eksin, Ece, Erdem, Arzum   +4 more
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A comprehensive review of CUPRAC methodology

, 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
Esma Tütem, Ozyurek, Mustafa, Erol Erçağ, Tutem, Esma, S. Esin Çelik, Leyla Yıldız, Ercag, Erol, Kevser Sözgen Başkan, Şeyda Karaman, Celik, S. Esin, Reşat Apak, Yıldız, Leyla, Kubilay Güçlü, Baskan, Kevser Sozgen, Mustafa Özyürek, Baki, Sefa, Apak, Resat, Sefa Baki, Guclu, Kubilay, Karaman, Seyda   +19 more
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Determination of total antioxidant capacity of humic acids using CUPRAC, Folin-Ciocalteu, noble metal nanoparticle- and solid-liquid extraction-based methods

, 2021
Total antioxidant capacity (TAC) of humic acid (HA) samples was determined using CUPRAC (CUPric Reducing Antioxidant Capacity), FC (Folin-Ciocalteu), QUENCHER-CUPRAC, QUENCHER-FC, Ag-NP (Silver nanoparticle)- and Au-NP (Gold nanoparticle)-based methods ...
Uzer, Aysem, Balta, Zeynep, Kanmaz, Nergis, Karadirek, Seyda, Demircivi, Pelin, Apak, Resat, Hizal, Julide   +6 more
core   +1 more source