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Type of publication: Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Biologija / Biology (N010)
Author(s): Kazlauskaitė, Eglė;Šliumpaitė, Irma;Zybartaitė, Lina;Paulauskas, Algimantas;Kupčinskienė, Eugenija
Title: Antioxidant properties and element concentrations of the flowers of impatiens glandulifera
Is part of: The vital nature sign [elektroninis išteklius] : 7-th international scientific conference : abstract book. Kaunas : Vytautas Magnus university, 2013, [no. 7]
Extent: p. 75-75
Date: 2013
Abstract: Since long time flower morphology of Impatiens species was subject of wide investigations. Impatiens glandulifera is an alien invasive plant with huge and bright flowers. Flowering time of this species usually starts in July and lasts till the frosts. For I. glandulifera five types of flowers are documented according to colour which ranges from gentle pink to dark purple. Till now insufficient attention has been paid to the physiology and biochemistry of this part of the plant which is attractive for both insects and human beings. Our study aimed at evaluation of variety of I. glandulifera populations according to the concentrations of antioxidants and elements in the flowers. Plant material was collected from thirty locations in Lithuania. After transportation to the laboratory different parts of the plants were separated, Material was dried till the permanent weight and grinded with the mill to obtain the homogenic powder. Flower extracts were prepared using 3 types of solvents (water, ethanol, butanol) using cold extraction. For the measurements of the antioxidant activity of the extracts, 1,1-diphenyl-2- picrylhydraryl radical (DPPH) and 2,2‟-azinobis(3-ethylbenzothiaziline-6-sulfonate) ABTS were used, estimating the free radical scavenging activity. Also total phenolic content (TPC) was evaluated using Folin-Ciocalteu method. To evaluate concentrations of the nutrients and trace elements in the flowers, flame atomic-absorption spectrophotometry and graphite furnace atomic absorption spectrometry were applied. For element analyses flower powder was digested in by the mixter of 65 % HNO3 and 30 % H2O2. Prepared extracts were atomized in the flame of acetylene and weather mixture in ~2300 °C. Quiet high concentrations of phenolic compounds were documented, at the same time free radical scavening activity was not high. [...]
Affiliation(s): Biologijos katedra
Gamtos mokslų fakultetas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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