Browsing by Author "Gebeyehu, Aklilu"

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    Synthesis of Iron-Iii and Chromium-Iii Based Metal-Betanin Complexes Using Betanin as a Natural Ligand Isolated from Beetroot
    (Addis Ababa University, 2020-07-07) Gebeyehu, Aklilu; Abebayehu, Mekonnen (PhD)
    The aim of this research work was to isolate betanin from beetroot (Beta vulgaris L.), investigate the antioxidant activity of betanin, synthesis of betanin-iron (III) and betanin-chromium (III) complexes and characterization. The beetroot was collected from Meri local market, Addis Ababa. The essential compounds were extracted by solvent extraction and purified by liquid column chromatography. The result was determined by UV-Vis spectral studies. The analysis result indicates betanin is one of a beetroot component was observed at a peak of 538 nm wavelength. Structurally, betanin can potentially act as a bidentate ligand and can be used for complex formation. This study investigated the anti-oxidant activity of betanin, synthesis of betanin-iron (III) and betanin-chromium (III) complexes and characterization. The ferric reducing power method was applied for anti-oxidant measuring of blue colour which is an indicator of higher antioxidant properties of betanin. The complex formation between Cr (III) and Fe (III) and betanin was carried out in distilled water. The resulting complexes were characterized by UV-Vis and XRD spectral studies. The UV-Vis spectral analysis results of iron (III)-betanin and chromium (III)-betanin complexes were at a wavelength of 358 nm and 458 nm respectively. This shows that betanin were inducing a blue-shifting due to the coordination or aggregation between iron (III) and chromium (III) to betanin. The XRD analysis results were also irregular base line. This indicates that the presence of amorphous phase within the sample.