Tengku Emrinaldi, Iwantono Iwantono, Febrina Wulandari, Yuda Arya Baskara, Arif Darma Saputra, Mayta Novaliza Isda, Puji Nurrahmawati, Suratun Nafisah, Romi Fadli Syahputra, Marlia Morsin
Biosynthesis is a form of synthesis that involves the utilization of living organisms as biological agents. Zinc oxide is a versatile semiconductor material that exhibits antibacterial properties, thereby impeding the proliferation of germs. The objective of this research was to examine the impact of synthesis temperature on the properties of ZnO for its potential use as an antibacterial agent against E. coli. Zinc oxide (ZnO) nanomaterial powder was synthesized by a biosynthetic approach employing a combination of zinc nitrate hexahydrate (ZNH) and pineapple fruit extract. The synthesis temperature was varied at four different levels: 28°C, 50°C, 75°C, and 100°C. The physical properties of zinc oxide (ZnO) nanoparticles were examined using UV-Vis spectroscopy, X-ray diffraction (XRD), and field emission scanning electron microscopy (FESEM). The antibacterial activity was assessed using the disc diffusion method. This study provides empirical evidence supporting the efficacy of ZnO nanoparticles as antibacterial agents. © 2026, Universiti Malaysia Perlis. All rights reserved.
Department of Physics, Faculty of Mathematics and Natural Science, Universitas Riau, Pekanbaru, 28293, Indonesia; Department of Biology, Faculty of Mathematics and Science, Universitas Riau, Pekanbaru, 28293, Indonesia; Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Padang, Padang, 25132, Indonesia; Department of Electrical Engineering, Institute Technology of Sumatera (ITERA), Way Hui, South Lampung, 35365, Indonesia; Department of Physics, Universitas Muhammadiyah Riau, Pekanbaru, 28294, Indonesia; Microelectronic and Nanotechnology – Shamsuddin Research Centre (MiNT-SRC), Institute of Integrated Engineering, Universiti Tun Hussein Onn Malaysia, Johor, 86400, Malaysia