Résumé:
This investigation aimed to characterize of selenium nanoparticles synthesized by green approaches using
Sonchus maritimus L. extract and evaluate their antioxidant and antibacterial properties. Moreover, acute toxicity
of nanoparticles was performed in Wistar rats. The synthesis of SeNPs was confirmed by Scanning Electron
Microscopy and Energy Dispersive X-ray analysis. Antioxidant activities of S. maritimus and SmE-SeNPs were
determined by DPPH and FRAP assays. Antibacterial activities were tested against Gram positive and negative
pathogen bacteria. The SEM results showed that SeNPs had a spherule-like structure reaching up to 26.48 nm.
In addition, S. maritimus extract and SmE-SeNPs had DPPH scavenging activity and reducing power. SeNPs
exhibited activities against Escherichia coli and Staphylococcus aureus. In conclusion, S. maritimus can be
considered as biocatalyst stabilizers for the biosynthesis of SeNPs which might be used in several pharmaceutical
and medical applications due to their biological efficiency
