Preparation of monodispersed and cytotoxic silver nanoparticles using Launaea taraxacifolia leaf extract

• DOI: 10.1007/s40097-019-00316-x
• Publication Date: 2019-09-09T14:51:36Z
• Authors: Enobong R. Essien; Violette N. Atasie; Esther U. Udobang; Goddey Umanu
• Keywords: Silver nanoparticle; Minimum bactericidal concentration; Nanochemistry

The current work investigated the green and low-cost preparation of silver nanoparticles (AgNPs) using aqueous extract from Launaea taraxacifolia leaf studied its antimicrobial effects. was analysed in a gas chromatogram–mass spectrometer to assess phytochemicals present. UV–Vis spectrophotometer used monitor formation AgNPs, morphological assessment performed by scanning electron microscope, energy dispersive X-ray analysis determine elemental composition, particle size shape were transmission microscopy, vibrational modes bonds AgNPs assessed Fourier transformed infrared spectroscopy. produced spherical range 9–15.5 nm, monodispersed with large surface area. minimum inhibitory concentration (MIC) bactericidal (MBC) against Pseudomonas aeruginosa Proteus mirabilis very low. Against P. aeruginosa, MIC 0.10 mg/mL MBC 0.15 mg/mL, while 0.05 0.25 respectively. Therefore, prepared L. showed high antibacterial activities could be candidate agent for biomedical applications.