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    Evaluation of chemical content and radical scavenging activity of Allium vineale L. Extract and its elemental analysis
    (Editura Academiei Romane, 2019) Tegin, İbrahim; Yabalak, Erdal; Sadik, Betül; Fidan, Mehmet
    Allium vineale L. was extensively analysed to determine its radical scavenging activity, chemical composition, total polyphenol content, and elemental composition. The Soxhlet and the subcritical water extraction methods were performed for the extraction procedure. The extracts obtained in the subcritical water extraction method were evaluated by GC-MS. 11 compounds were determined according to mass spectral libraries of GC-MS, Wiley7Nist05.L, NIST05a.L, W9N11.L. The obtained compounds were evaluated for their benefits on health according to literature. DPPH inhibition of Allium vineale L. was obtained as 58.60 % and the total polyphenol content of Allium vineale L. was obtained as 12 µg/mL gallic acid equivalent. 28 elements were obtained in the elemental analysis by ICP-MS, using the microwave digestion procedure. UHPLC-ESI-MS/MS analysis was performed for the evaluation of methanolic extract of Allium vineale L. obtained in the Soxhlet extraction method. © 2019 Editura Academiei Romane. All rights reserved.
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    Removal of Cadmium and Lead from Aqueous Solution by Calcite
    (Pol. J. Environ. Stud., 2007) Yavuz, Omer; Guzel, Remziye; Aydın, Fırat; Tegin, İbrahim; Ziyadanoğulları, Recep
    The removal of toxic cadmium(II ) and lead(II ) from aqueous solutions was investigated using calcite, which is inexpensive and widespread over the globe, as the effective inorganic adsorbent. The experimental data of the removal equilibrium were correlated by either the Langmuir or Freundlich equations. Results indicate that the Langmuir model gave a better fit to the experimental data than the Freundlich equation. Maximum adsorption capacities were determined as 18.52 mg/g Cd and 19.92 mg/g Pb for natural calcite at 25°C, respectively.