Zdzisław Kruczyński

Learn More
The free radical scavenging activity of methanolic, ethanolic and aqueous extracts from Ginkgo biloba leaves, has been determined by EPR (electron paramagnetic resonance) using the DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging method. The investigation has also included selected constituents of G. biloba leaves, protocatechuic and p-coumaric(More)
Electronic states of iron ion complexes in human blood from patients with melanoma have been investigated by electron paramagnetic resonance (EPR). The measurements were performed at liquid nitrogen temperature (77 K) on an X-band EPR spectrometer. Numerous types of iron paramagnetic centers have been identified. In several kinds of protein complexes(More)
The application of electron paramagnetic resonance (EPR) spectroscopy in pharmacy of melanin complexes with netilmicin and Cu(II) was presented. The continuous microwave saturation of EPR spectra of DOPA–melanin and the complexes was performed. EPR spectra were measured on an X-band (9.3 GHz) spectrometer at temperatures in the range of 105–300 K.(More)
The content of flavonoids, total phenolic acids and free radicals has been determined respectively by Christ-Muller method, HPLC and EPR in leaves of Ginkgo biloba L. during the vegetative cycle. The relationship between these parameters has been discussed.
Gadolinium(III) cryptates investigated by multifrequency EPR Andrzej Szyczewski a,∗, Stefan Lis b, Jerzy Krzystek c, Krzysztof Staninski b, Andrzej Kłonkowski d, Zdzisław Kruczyński a, Marek Pietraszkiewicz e a Faculty of Physics, A. Mickiewicz University, Umultowska 85, Poznań, Poland b Faculty of Chemistry, A. Mickiewicz University, Grunwaldzka 6, Poznań,(More)
Diffusion of tear film components through a hydrogel contact lens is significantly influenced by its interactions with material. In our study Cu and Mn ions were used to describe transport properties of the membranes which were hydrogel contact lens materials. Ion concentrations were measured by an electron spin resonance (ESR) spectrometer, and(More)
  • 1