A5087486060- Phytochemicals and Antioxidant Activities
- Free Radicals and Antioxidants
- Antioxidant Activity and Oxidative Stress
- Adsorption and biosorption for pollutant removal
- Electrochemical sensors and biosensors
- Computational Drug Discovery Methods
- Electrochemical Analysis and Applications
- Chemical Synthesis and Characterization
- Essential Oils and Antimicrobial Activity
- Synthesis and biological activity
- Radioactive element chemistry and processing
- Bauxite Residue and Utilization
- Extraction and Separation Processes
- Advanced Chemical Sensor Technologies
- Minerals Flotation and Separation Techniques
- Dye analysis and toxicity
- Tea Polyphenols and Effects
- Vitamin C and Antioxidants Research
- Phytochemistry and Biological Activities
- Molecular Sensors and Ion Detection
- Bioactive Compounds and Antitumor Agents
- Electrokinetic Soil Remediation Techniques
- Sulfur Compounds in Biology
- Radioactive contamination and transfer
- biodegradable polymer synthesis and properties
Adnan Menderes University
2019-2024
Istanbul University
2009-2018
Istanbul University-Cerrahpaşa
2018
The chemical diversity of antioxidants makes it difficult to separate and quantify from the vegetable matrix. Therefore, is desirable establish a method that can measure total antioxidant activity level directly extracts. current literature clearly states there no "total antioxidant" as nutritional index available for food labeling because lack standard quantitation methods. Thus, this work reports development simple, widely applicable capacity dietary polyphenols vitamins C E, utilizing...
It would be desirable to establish and standardize methods that can measure the total antioxidant capacity level directly from vegetable extracts containing phenolics. Antioxidant assays may broadly classified as electron transfer (ET)- hydrogen atom (HAT)-based assays. The majority of HAT are kinetics-based, involve a competitive reaction scheme in which substrate compete for peroxyl radicals thermally generated through decomposition azo compounds. ET-based an reduction oxidant, changes...
The chemical diversity of natural antioxidants (AOXs) makes it difficult to separate, detect, and quantify individual from a complex food/biological matrix. Moreover, the total antioxidant power is often more meaningful evaluate health beneficial effects because cooperative action species. Currently, there no single assay for food labeling lack standard quantification methods. Antioxidant assays may be broadly classified as electron transfer (ET)- hydrogen atom (HAT)-based assays. results...
The total antioxidant capacity of the aqueous extracts some endemic herbs—prepared as infusions by steeping these herbs in hot water—was assayed with bis(neocuproine)copper(II) chloride, also known cupric ion reducing (CUPRAC) reagent, which was easily accessible, rapid, stable and responsive to both hydrophilic lipophilic antioxidants. highest capacities herbal teas available Turkish market were observed for scarlet pimpernel (Anagallis arvensis), sweet basil (Ocimum basilicum), green tea...
Background: Tests measuring the combined antioxidant effect of nonenzymatic defenses in biological fluids may be useful providing an index organism's capability to counteract reactive species known as prooxidants, resist oxidative damage and combat stress-related diseases. The selected chromogenic redox reagent for assay human serum should easily accessible, stable, selective, respond all types biologically important antioxidants such ascorbic acid, α-tocopherol, β-carotene, reduced...
A sensitive colorimetric method for the detection of polyphenols (i.e., flavonoids, simple phenolic, and hydroxycinnamic acids) was proposed in this research based on reduction Ag(+) ions by presence citrate-stabilized silver seeds. The color stable suspension controlled varying concentration trisodium citrate, nitrate, to spherical nanoparticles (SNPs) citrate seeds produced a very intense surface plasmon resonance (SPR) absorption band SNPs at 423 nm. absorbance allows quantitative...
Abstract This project was aimed to identify the quenching chemistry of biologically important reactive oxygen and nitrogen species (ROS/RNS, including radicals), show antioxidant action against through H‐atom electron transfer reactions, evaluate ROS/RNS scavenging activity antioxidants with existing analytical methods while emphasizing underlying chemical principles advantages/disadvantages these methods. In this report, we focused on applications impact assays potentiating future research...
Since antioxidants are health-beneficial compounds capable of removing reactive species, assay total antioxidant capacity (TAC) by simple and low-cost methods is important. The magenta-coloured iron(II)-ferrozine (Fe(II)-FZ) complex showing an absorbance maximum at 562 nm has previously been utilized for iron-binding assays, but not determination. Ferrozine a highly ferrous-stabilizing ligand such that ferric ion in the presence ferrozine easily oxidizes itself reduced to Fe(II)-FZ, yielding...