Phytosynthesis of selenium nanoparticles using the costus extract for bactericidal application against foodborne pathogens

Abstract

Selenium (Se) as a bioactive micronutrient could be augmented via transforming into nanoparticles (NPs), especially using biogenic protocols, for usage as an antimicrobial element. The reducing power of costus (Saussurea costus) root extract (SCE) was employed for phytosynthesis of Se-NPs through a simple and rapid protocol that included stirred mixing of 10 mM Na2SeO3 with 1.0% SCE solution for 4 h. The phytosynthesized SCE/Se-NP composite was obtained with a mean diameter of 6.13 nm and a zeta potential of −42.8 mV. Infrared analyses revealed the involvement of many SCE phytogroups in Se-NP synthesis, whereas transmission microscopy displayed well distribution and spherical shapes of the phytosynthesized NPs. The antibacterial assessments against foodborne pathogens (Escherichia coli, Salmonella typhimurium and Staphylococcus aureus) revealed the superior powers of SCE/Se-NPs and the elevated potentialities of SCE and Se-NPs for inhibition of bacterial pathogens. The scanning micrographs indicated that SCE/Se-NPs were attached to bacterial cells and led to their complete lysis/explosion with exposure prolongation. The SCE/Se-NP composites are recommended for the effective control of foodborne bacterial pathogens, applying a simple and eco-friendly phytosynthesis protocol.

Application of Nanocomposites from Bees Products and Nano-Selenium in Edible Coating for Catfish Fillets Biopreservation

“…Additionally, the reducing powers and antioxidant activity of Pro molecules could enforce the reduction of Se to SeNPs, which was recently stated for AgNPs synthesis with Pro [49]. The BCht particles' size was slightly increased after encapsulating Pro/SeNPs with a minor reduction in BCht surface positivity, which verified the efficiency of these nanopolymer particles for capping/encapsulating the conjugated molecules [34,45,49,50]. The slightly decreased positivity of BCht after conjugation with Pro/SeNPs may additionally appoint their physical capping of the nanocomposite rather than biochemical interactions with them [50].…”

“…The FTIR for the Pro/SeNPs was principally investigated to designate the main biological compounds in Pro that interfered in the synthesis/stabilizing of SeNPs. The shifted, emerged and disappeared bands of the Pro groups indicated their physiochemical interactions with SeNPs [12,45]. Additionally, the reducing powers and antioxidant activity of Pro molecules could enforce the reduction of Se to SeNPs, which was recently stated for AgNPs synthesis with Pro [49].…”

“…As demonstrated by its characterization, the UV-vis assessment and visual observation of Pro-synthesized SeNPs could verify the high capability of Pro to reduce Se ions and transform them into SeNPs. The alteration of SeNPs' solution color after Pro reduction is accredited to the SPR, which frequently recorded its λmax at ~265-275 nm [20,[44][45][46].…”

Saussurea lappa plant rhizome extract-based zinc oxide nanoparticles: synthesis, characterization and its antibacterial, antifungal activities and cytotoxic studies against Chinese Hamster Ovary (CHO) cell lines

“…Best of our knowledge, Saussurea lappa plant extract used for the synthesis of the oxides of the Silver [ 66 ], Magnesium [ 67 ], and Selenium [ 68 ] but no literature available on a synthesis of ZnO-NPs. In the light of the above, herein reporting the preparation of ZnO nanoparticles from roots (rhizome) of Saussurea lappa plant methanol extract and its anti-bacterial, anti-fungal activities and cytotoxicity effect of ZnO nanoparticles against Chinese Hamster Ovary (CHO) cell lines.…”

The exploration of bio-inspired copper oxide nanoparticles: synthesis, characterization and in-vitro biological investigations

“…From the literature survey, it is observed that the Ocimum species used for the synthesis of silver [ 42 , 43 ], gold [ 44 ], platinum [ 45 ], copper [ 46 ] and zinc [ 47 ] oxide nanomaterials. Saussurea lappa plant rhizome extract was utilized in the synthesis of silver [ 48 ], magnesium [ 49 ] selenium [ 50 ], and zinc oxide [ 51 ] nanoparticles but no literature on the synthesis of copper oxide (CuO) nanoparticles. In addition, best of our knowledge, there is no literature available on the synthesis of copper oxide (CuO) nanoparticles using a mixture of both Ocimum sanctum and Saussurea lappa plant extracts.…”