Antimicrobial polyethyleneimine-silver nanoparticles in a stable colloidal dispersion

Assessment of biopolymer stabilized silver nanoparticle for their ecotoxicity on Ceriodaphnia cornuta and antibiofilm activity

“…The particle size can be reduced by decreasing the sodium alginate concentration. These statements are supported by the reports of Lee et al [36] who suggested that the increase in the polymer concentration could induce conflicting effects on the particle size. At higher polymer concentrations, more polymer molecules can cap the AgNPs to increase the particle size.…”

Antioxidative and antiinflammatory activities of quercetin-loaded silica nanoparticles

“…Considerable evidence suggests that the cytotoxicity of silver nanoparticles results from their interaction with mitochondria and induction of the apoptosis pathway via the production of ROS. A dramatic increase in ROS levels has been found, suggesting that oxidative stress is an important mediator of cytotoxicity [35][36][37][38]. Free quercetin and the quercetin-loaded silica nanoparticles showed cell viabilities comparable to that of the control, as shown in Figure 5.…”

Antimicrobial activity of nano-sized silver colloids stabilized by nitrogen-containing polymers: the key influence of the polymer capping

“…The polymeric materials are used almost exclusively as stabilizers in the presence of different reducing agents. Polysaccharides, polycations, 23 polyamino acids 24 as well as other non-ionic water-soluble polymers 25 were successfully employed for such a purpose with resulting biological activity of the hybrid materials evaluated. Alternatively, when nitrogen-containing polymers are incorporated into the process, they can simultaneously act as reducing and stabilizer agent while imparting unique properties to the manufactured colloidal systems.…”