| Abstract [eng] |
Nanoparticle technology is a field that combines physics, chemistry, and biology, and is known since the last century when the synthesis, properties, and applications of nanoparticles began to be studied. These particles, up to 100 nm in size, exhibit unique chemical, physical, and biological properties. Nanoparticles can be applied in various fields: medicine, cosmetics, food industry, and environmental protection. This paper examines the biosynthesis method of silver nanoparticles, closely related to industrial production development, which often involves with the use of harmful substances that can enter the environment. To find new alternative ways to solve this problem and reduce the amount of toxic substances entering the environment, the paper proposes using a "green" biosynthesis method involving plant extract. In this study, silver nanoparticles were synthesized using the biosynthesis method with plant extract from Zinnia elegans, where biologically active compounds in the extract acted as reducing agents, and silver nitrate solution served as the silver source. Ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction analysis, scanning electron microscopy analysis, transmission electron microscopy analysis, and energy-dispersive X-ray spectroscopy confirmed that silver nanoparticles were formed during biosynthesis. The antibacterial properties investigation showed that the silver nanoparticles were effective against the pathogenic bacteria Escherichia coli and Bacillus subtilis. |
