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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Preparation and phytoextraction of 125-I labelled pharmaceuticals
 Luptáková, Dominika ; Smrček, Stanislav (advisor) ; Soudek, Petr (referee)
Pharmaceuticals are group of organic substances with significant worldwide consumption in human and veterinary medicine. These compounds may be metabolized in the organism, but in some cases they remain unchanged and both are usually excreted via renal excretion in the native form or as metabolites. Large quantities of pharmaceuticals and their metabolites contaminate municipal wastewater. The wastewater treatment plants are unable to remove these substances completely, so they contaminate surface water, groundwater and soil as well. Due to the biological activity of pharmaceuticals, long - term effect may cause bacterial resistance, endocrine influence, DNA and renal damages in non-target organisms. The phytoextraction and the translocation of radiolabeled diclofenac with 125 I were experimentally studied by using of in vitro cultivated plants Helianthus annuus and Zea mays. Efficiency od phytoextraction was monitored as decrease of radioactivity of tested substance [125 I]diclofenac in Murashige-Skoog cultivation medium. Both species are able to extract tested substance during 8 to 10 days of cultivation, with efficiency approximately 85 % using Zea mays and 79 % using Helianthus annuus. Better extraction ability of diclofenac was observed at Helianthus annuus - 80 mg/ kg of dry weight compared...
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Phytoextraction of Artificial Sweeteners from Aqueous Solutions
 Luptáková, Dominika ; Smrček, Stanislav (advisor) ; Břichnáčová Habartová, Věra (referee)
The artificial sweeteners are currently worldwide used as food additives. In human organism they are only partially metabolized and then renally excreted. The big amounts of these abiogenic compounds contaminate municipal wastewaters. The efficiency of cleaning process in the sewage treatment plants (STP) is usually for cyclamate about 99 % and saccharine cca. 90 %. Acesulfame K is in STP practically not eliminated. Although most of artificial sweeteners are considered as good degradable, the residues were found in both surface waters and groundwaters. At long-term treatment can these compounds exhibited biological effect such as cancer genesis, gastrointestinal effects and/or surprisingly body mass increasing. The phytoextraction of saccharine and acesulfame K was experimentally studied by using of "in vitro" cultivated plants Helianthus annuus, Zea mays, and Brassica napus. The phytoextraction was monitored as decrease in medium concentration of tested substance in Murashige-Skoog cultivation medium. It was shown, that used species are able to extract tested substances and during 5 to 7 days 30 - 60 % of acesulfam K and 50 - 60 % of saccharine amounts disappear from cultivation medium depending of used plant species. The best extraction ability was observed at Helianthus annuus cultivars - 0.1...
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