Abstracto

Green synthesis, characterization of manganese oxide nanoparticles using Ziziphus abyssinica plant extract and their antimicrobial efficacy.

Mahmud Rashida Kachallaa, Aliyu Abdullahia, Mohammed Salihu Aliyua and Jibrin Muhammad Yelwa

Development of green technology is generating interest of researchers towards eco-friendly and low-cost methods for biosynthesis of nanoparticles (NPs). In this study, manganese oxide (MnO) NPs were synthesized using a manganese acetate precursor and Ziziphus Abyssinia leaves extract. The biosynthesized MnO NPs were characterized using an X-ray diffractometer (XRD), scanning electron microscopy (SEM), Ultraviolet visible spectroscopy (UV-Vis), and Fourier transform infrared (FTIR) spectroscopy. XRD characterization confirmed that the biosynthesized MnO NPs possessed a good crystalline nature which perfectly matched can be assigned to tetragonal structure. FTIR spectra of MnO NPs revealed the presence of O-Mn-O stretch vibration at around 913.80 and 796 cm-1. Furthermore, the results obtained from SEM showed that the biosynthesized MnO NPs were spherical in shape which is also in agreement with that reported by Jayandran et al. (2015). Moreover, the antimicrobial activities of different concentrations of MnO NPs synthesized using Ziziphus Abyssinia extract were also tested. From the inhibition zone results, synthesized MnO NPs were showed better inhibition activity than the Ziziphus Abyssinia leaf extract against Escherichia coli, Staphylococcus aureus Salmonella Typhi, Shigella bacteria and also exhibited similar inhibition activity to standard drug against Candida albicans, Candida Tropicalis, Aspergillus Niger and Aspergillus flavus. Thus, our findings report Mn nanoparticles synthesized from the above proposed green method are show promise results in the view of pharmaceutical and therapeutic applications