Journal of New Results in Science, cilt.14, sa.2, ss.166-180, 2025 (TRDizin)
This study aimed to evaluate the anticancer and antibacterial drug status of biomass,
including zinc oxide (ZnO) nanoparticles (NPs) synthesized from two plant extracts according to the
results of Topoisomerase-I enzyme inhibition, DNA cleavage, DNA binding, and antibacterial
activity tests. The Malus domestica (apple) and Tilia cordata (linden) plants were dried and
powdered, and their extracts were prepared in pure water. X-Ray Diffraction (XRD), Scanning
Electron Microscopy (SEM), and Fourier Transform Infrared (FTIR) analyses were applied for the
characterization of the light-yellow powder ZnO NPs. Additionally, Topoisomerase-I enzyme
inhibition, DNA cleavage, and DNA binding analyses were performed by agarose gel electrophoresis
method. Powder ZnO NPs (biomass) were analyzed by the agar well diffusion method by using two
gram-positive and two gram-negative bacteria. According to the XRD analysis results, the peaks
obtained show that there is no foreign matter or secondary diffraction peak other than the hexagonal
ZnO structure. It was observed that ZnO NPs from Tilia cordata extract are effective against
Klebsiella pneumoniae. ZnO NPs from Malus domestica extract have the potential to be an effective
human Topoisomerase-I enzyme inhibitor. There was poor DNA cleavage activity in all samples. In
ZnO NPs from linden extract, there was an interaction at a 1mg/mL concentration of CT-DNA.