Assessment of antimicrobial activity and methyl orange dye removal by Klebsiella pneumoniae-mediated silver nanoparticles

Green Processing and Synthesis, Год журнала: 2024, Номер 13(1)

Опубликована: Янв. 1, 2024

Abstract The synthesis of silver nanoparticles (AgNPs) using bacteria is more interesting because their non-toxic, biocompatible, environmentally friendly, and cost-effectiveness. In the present research work, AgNPs were synthesized by Klebsiella pneumoniae in two steps: first, K. was grown nutrient broth, followed mixing bacterial supernatant nitrate aqueous solution an optimized ratio. thoroughly analyzed analytical instruments for a detailed investigation. absorption peak observed UV-visible spectrophotometry at 464 nm indicated development AgNPs, while characteristic bands infrared spectroscopy region 500–4,000 cm −1 . Morphological examination via field emission SEM unveiled spherical-shaped whose sizes varied from 22.25 to 47.99 nm, along with high aggregation. crystallinity nature demonstrated X-ray diffraction, which revealed major intensity peaks 2 θ values 27.6°, 31.9°, 46°. showed 26.6% methyl orange dye removal within 50 min. antibacterial activities against Bacillus cereus , megaterium Serratia marcescens Staphylococcus aureus maximum zones inhibition, i.e., 14 mm (10 mg·mL ), 16 (5 10 13 12 ). Therefore, bacterial-synthesized exhibited potential application biomedicine, may be further used various other pathogens.

Язык: Английский

Selenium nanoparticles induce coumarin metabolism and essential oil production in Trachyspermum ammi under future climate CO2 conditions.

Plant Physiology and Biochemistry, Год журнала: 2024, Номер 211, С. 108705 - 108705

Опубликована: Май 6, 2024

Язык: Английский

The wavelength dependence of oxygen-evolving complex inactivation in Zostera marina

Plant Physiology and Biochemistry, Год журнала: 2024, Номер 212, С. 108739 - 108739

Опубликована: Май 16, 2024

Язык: Английский