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The phytosynthesis of metallic nanoparticles (MNPs) represents an interesting domain of research, with promising perspectives especially in medicine and food protection. A special area represents biosynthesis of MNPs by vegetal materials. In the present research, synthesis of silver nanoparticles (AgNPs) was obtained through a simple method, using different parts (flowers and stems) of snowdrop plant (Galanthus nivalis L.). The AgNPs were formed by reaction of biomass of Galanthus nivalis extract with aqueous solution of AgNO3 at room temperature and dark conditions. The synthesized nanoparticles were confirmed by UV–VIS spectroscopy (between 250-750 nm), optical microscopy and dynamic light scattering – DLS (indicated that all the particles are nano-sized with average diameters between 200-400 nm). To demonstrate the presence of bioactive components of snowdrop plant (flowers and stems), the extract was quantitatively (polyphenols, flavonoids) and qualitatively (alkaloids, carbohydrates, terpenoids) characterized. The antioxidant activity (AA%) of snowdrop extracts and AgNPs samples was evaluated using DPPH method. AA% showed an increase at AgNPs samples compared to the extract. The antimicrobial activity of AgNPs samples was demonstrated by testing on Candida albicans and Staphylococcus aureus and it was resulted a good activity against these two pathogens. Next step of this research was to find an application of snowdrop-derived AgNPs for the wood treatment or preservation of wood objects.
Plant extract, Green methods, Silver nanoparticles, Bioactivity (antioxidant and antibacterial) properties.
I. R. SUICA-BUNGHEZ, I. C. COVALIU, A. A. SORESCU, L. C. NISTOR, M. CONSTANTIN, I. RAUT, R. M. ION, Silver nanoparticles obtained by eco-friendly method using Galanthus nivalis plant for wood conservation, Optoelectronics and Advanced Materials - Rapid Communications, 16, 1-2, January-February 2022, pp.79-89 (2022).
Submitted at: April 12, 2021
Accepted at: Feb. 10, 2022