Abstract
Selenium nanoparticles (SeNPs) are reinforced safe forms of the essential micronutrient selenium (Se) which take a lead in countless biotechnological and biomedical applications. The phycosynthesis of SeNPs was successfully investigated using cell-free extract of the microalgae,
The phycosynthesized
-SeNPs (
SeNPs) were characterized using several characterization techniques such as UV-Visible, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and energy dispersive X-ray. They were effectually achieved using different concentration from sodium selenite (Na
SeO
) (1, 5, and 10 mM) to give size means of 12.64, 8.61, and 5.93 nm, respectively, with spherical shapes and highly negative zeta potentialities. The infrared analyses revealed the involvement of many phycochemials in
SeNPs production. The antibacterial properties of
SeNPs were confirmed, qualitatively and quantitatively, against foodborne microorganisms (
and
); the antibacterial activity was correlated and increased with SeNPs’ size diminution. The scanning micrographs of
cells treated with
SeNPs indicated the severe action of nanoparticles to destroy bacterial cells in time-dependent manners. The innovative facile phycosynthesis of SeNPs using
is recommended to generate effectual bioactive agents to control hazardous bacterial species.