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Micro-Raman Spectroscopy of Natural and Synthetic Ferritins and Their Mimetics

100%
Szybowicz M., Koralewski M., Karoń J., Melnikova L.
Acta Physica Polonica A
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2015
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vol. 127
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issue 2
534-536
EN
Micro-Raman spectroscopy was used to studies of naturally occurring biogenic ferritin, synthetic ferritin with magnetic core (magnetoferritin) as well as their several mimetics. We demonstrate the ability of micro-Raman spectroscopy to discriminate between ferritin and magnetoferritin used in the studies. The results are promising for further use of the Raman spectroscopy as potential tool to distinguish between the forms of iron present in biogenic materials and biological tissues.
2
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Optical and Magnetooptical Properties of Clinical Dextrans

100%
Koralewski M., Reinholz F., Karoń J., Waraczewski K.
Acta Physica Polonica A
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2007
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vol. 112
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issue 5
1119-1124
EN
The effect of dextran concentration, pH, temperature, and urea on the conformation of dextran chain in saline solution were studied. Two characteristic concentrations for both dextrans were observed. One with c_1≈0.02 g/dL and second with c_2∼2 g/dL which may be related with aggregation and overlapping processes of polymer chains, respectively. The mean optical polarizability for dextran polysaccharides were discussed in relation to their radius of gyration. Preliminary results of the Faraday effect dispersion and their temperature dependence is also presented.
3
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Magneto-Optical Study Toward Discrimination of Iron Mineral in Human Tissues

88%
Koralewski M., Żurawski J., Langkammer C., Karoń J., Haybaeck J.
Acta Physica Polonica A
|
2018
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vol. 133
|
issue 3
742-744
EN
Magnetic optical rotatory dispersion (MORD) of thin selected biological tissues and thin film of composite made from akaganeite mineral and PVA as well as ferritin and their mimetics aqueous suspensions were performed in spectral range 250-650 nm at room temperature. Good correlation between MORD spectra for akaganeite composite film, ferritin and their mimetics aqueous suspensions with spectra of thin slices of human tissue obtained from white matter of the brain and spleen were observed. Comparison suggest a contribution from Fe(III) to MORD spectra of tissues. This preliminary results show that application of MORD spectroscopy to clinical analysis may be useful.
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