Fruit peels waste for the green synthesis of silver nanoparticles with antimicrobial activity against foodborne pathogens

Biofilm Eradication Using Biogenic Silver Nanoparticles

“…These results could be attributed to the neutralization of surface charges of PchNPs, which presented negative net charge at pH 6, resulting in their aggregation. In order to determine the antibacterial activity of PchNPs, a bacterial inoculum of E. coli in LB media was supplemented with different concentrations of PchNPs and incubated for 24 h. Consistent with results reported by other authors using biogenic nanoparticles [23], in this work the Resazurin cell viability assays showed minimum inhibitory concentration (MIC) of PchNP of 0.25 nM for E coli cells.…”

“…ESEM imaging shows that when E. coli cells are exposed to PchNPs (Figure 7c-f), their cell wall shows loss of integrity when compared to the control (Figure 7a,b). At lower, sub-MIC, PchNPs concentrations (Figure 7c,d), bacterial cells appear to be losing part of their cytoplasmic components (indicated by arrows in Figure 7d) and, with the increment of the concentration (Figure 7e In order to determine the antibacterial activity of PchNPs, a bacterial inoculum of E. coli in LB media was supplemented with different concentrations of PchNPs and incubated for 24 h. Consistent with results reported by other authors using biogenic nanoparticles [23], in this work the Resazurin cell viability assays showed minimum inhibitory concentration (MIC) of PchNP of 0.25 nM for E coli cells.…”

Variation in surface properties, metabolic capping, and antibacterial activity of biosynthesized silver nanoparticles: comparison of bio-fabrication potential in phytohormone-regulated cell cultures and naturally grown plants

“…21 Several recent studies highlighted the role of different classes of plant secondary metabolites such as terpenoids, phenols, and alkaloids in the bio-reduction of silver salts. [22][23][24] The production of these metabolites can be streamlined in cell cultures using appropriate in vitro culture conditions and media composition including variation in supplemented phytohormones. 21 Alterations of growth regulators i.e.…”

Green synthesis, characterization of silver sulfide nanoparticles and antibacterial activity evaluation

“…Our results showed that the MZI for bacteria are higher than those reported in the literature (Jafari et al, 2017 andSibiya andMoloto, 2018). This difference is due to the particles size of NPs prepared and capping agents used in the preparation process (Andra et al, 2019;Baygar et al, 2019;Manjunath Hulikere and Joshi, 2019;Soliman et al, 2018;Soto et al, 2019). www.bosaljournals/chemint/ editorci@bosaljournals.com…”