Journal of Bioanalysis & Biomedicine

Khaled Youssef

Publications

• Research Article
  Antimicrobial Activity of Biosynthesized Silver Nanoparticles against E. coli and B. subtilis
  Author(s): Salwa Al-Thawadi, Alaa Shukralla A. Rasool and Khaled YoussefSalwa Al-Thawadi, Alaa Shukralla A. Rasool and Khaled Youssef
  
  Silver nanoparticles (AgNPs) are used increasingly in medical and agricultural sectors for disease management, due to their antimicrobial activity. In the current study, Biosynthesized AgNPs produced from a previous study (AgNPs1, AgNPs2 and AgNPs3) were used to test their toxicity on gram negative (E. coli) and gram positive (B. subtilis) bacteria. These nanoparticles (NPs) were examined by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDS) and X-ray diffraction (XRD). SEM micrographs show that AgNPs1 were almost spherical monodispersed while AgNPs2 were aggregated. More aggregations appeared in AgNPs3. Peaks of AgNPs are obvious in the EDS which were confirmed further by XRD peaks ascertaining the precipitation of AgNPs. Toxicity effect of AgNPs was tested by exposing E. coli and B. subtilis to AgNPs1, AgNPs2 and AgNPs3 dur.. Read More»
  DOI: 10.4172/1948-593X.1000197

  Abstract PDF