yusuf alan

This study reports the synthesis of Co(II), Fe(II), Pd(II), and Ru(II) complexes with Schiff base obtained by the condensation of 2-amino-methyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylate with salicylaldehyde. The characterization of the ligand and its complexes was arranged and studied by FT-IR, UV-Vis., 1H and 13C NMR, microanalyses (C, H, N, S), X-Ray Diffraction (XRD) analysis, magnetic susceptibility, mass spectra, and ThermoGravimetry Analysis (TGA) and further was screened for antimicrobial, antioxidant and antiradical activities. The antioxidant activity of the ligand and its metal complexes was examined by using different methods including the total antioxidant activity method, total reduction method, and DPPH. The antimicrobial activities of Schiff base and metal complexes were investigated on bacterial and fungal strains. DNA cleavage experiments of metal complexes with supercoiled pBR322 DNA were detected by gel electrophoresis in the being of H2O2.

Antioxidant activities of Satureja boissieri extracts were detected by using specific in vitro techniques. Standard antioxidant compounds such as ascorbic acid, BHA (Butylated Hydroxyanisole) and BHT (Butylated Hydroxytoluene) were used to compare with the results obtained from ethanol and water extracts of the plant samples. Both extracts presented high antioxidant actions on ABTS cation radical and DPPH free radical scavenging methods. Furthermore, the antimicrobial activity of S. boissieri was defined by using three fungi species, three Gram-positive and four Gram-negative bacteria species. The reducing power antioxidant activities of samples were measured by CUPRAC and FRAP techniques. Also, phenolic compounds of S. boissieri leaves were identified by UHPLC-ESI-MS/MS. The high concentration of hesperidin (5051 ± 247 ppb) and rosmarinic acid (4364 ± 214 ppb) was characterized quantitatively. According to the results, high phenolic content can be thought of as one of the responsible parameters for effective biological activity. Also, its flavonoid and phenolic contents are good natural sources for using in the food industry and pharmacological process.