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    Qualitative enzymatic detection of organophosphate and carbamate insecticides
    (Taylor & Francis Inc, 2020) Nartop, Dilek; Hasanoglu Ozkan, Elvan; Yetim, Nurdan Kurnaz; Sari, Nursen
    In this study, new polymers containing amides (TrisPS-Ntaa, andTrisPS-Ntaa-Fc) were synthesized by condensation reaction for qualitative identification of insecticides. The synthesized polymers, including amides were investigated by infrared spectroscopy (IR), scanning electron microscopy-energy dispersion X- ray spectrometry (SEM-EDX), and gel permeation chromatography (GPC). Then, acetylcholinesterase enzyme (AChE) was covalently immobilized on these polymers to improve properties (including activity, reusability, and storage stability). Accordingly, organophosphate (malathion, acephate, chlorpyrifos methyl) and carbamate (carbofuran, methiocarb, methomyl), which are used to prevent harmful organisms in some agricultural products were enzymatically determined based on their inhibitory activity on AChE.
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    Synthesis and in Vitro Antimicrobial Evaluation of Novel Potent Bioactive Heterocyclic Compounds
    (Taylor & Francis Ltd, 2023) Macit, Ahsen Zeynep; Hasanoglu Ozkan, Elvan; Ogutcu, Hatice; Nartop, Dilek
    In the present work, the antibacterial and antifungal properties of six new heterocyclic Schiff bases (HSb1, HSb2, HSb3, HSb4, HSb5, HSb6) were evaluated as potential bioactive compounds against the disease-causing pathogenic microorganisms (S.epidermidis, S.aureus, B.cereus RSKK863, E.aerogenes, P.aeroginosa sp., K. pneumonia, S. type H, P.vulgaris, E. coli and (C.albicans Y-1200-NIH). The well-diffusion-method was used to determine the antimicrobial activity. For this purpose, heterocyclic Schiff bases were synthesized by condensation reaction of aldehyde derivatives and thiosemicarbazide derivatives. Spectral analysis techniques (organic elemental analysis, FT-IR,H-1-NMR, HRMS, SEM-EDX) were used to characterize the synthesized compounds. It was determined that all the newly synthesized heterocyclic Schiff bases exhibited sound, high or moderate inhibitory effects on the growth of selected different standard antibiotics. [Graphical Abstract]