Andrej Staško

TL;DR: The continuous in situ irradiation of titanium dioxide powder, recommended for cosmetic application, investigated in different solvents resulted in the generation of oxygen-centered reactive radical species (superoxide anion radical, hydroxyl and alkoxyl radicals).

TL;DR: In this paper, the authors investigated the antioxidant properties of ground and instant coffees using electron paramagnetic resonance (EPR) using as oxidants 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), 1,1-diphenyl-2-picrylhydrazyl (DPPH), 4-hydroxy-2,2,6,6-6, 6-tetramethylpiperidine N-oxyl (TEMP

TL;DR: The antioxidant properties of green, black and mixed (fruit) tea samples of different origin were investigated by means of EPR spectroscopy and the highest antioxidant potential to terminate superoxide radicals was found in green teas, followed by black and fruity teas.

TL;DR: In this paper, the authors investigated the scavenging activity of carboxymethyl (1→3)-β-d -glucan (CMG) towards the radicals formed in the thermally initiated decomposition of potassium persulfate, hydrogen peroxide, or 2,2′-azo-bis(2-amidinopropane)-dihydrochloride in aqueous solutions using spin trapping as an indicative technique.

TL;DR: Comparison with earlier data revealed that flavonoids, 1-4, and caffeic acid ester 8 with lower oxidation potentials showed the maximal lipid antioxidant activity, whereas those with higher potentials (5, 6, 7, and 9) are less active.