Antibacterial effect of silver nanoparticles against Streptococcus mutans

Synthesis of hybrid copper-chitosan nanoparticles with antibacterial activity against cariogenic <i>Streptococcus mutans </i>

“…Although chitosan has also bactericidal properties, the MIC values of chitosan for S. mutans have been reported to range from 500 to 2,000 μg/mL −1 , 17,18) . Despite of this, MIC value of CuChNP against S. mutans is comparable to that reported for silver nanoparticles (50-222 μg/mL −1 ) or traditional oral antibacterials such as chlorhexidine (1,250 μg/ mL −1 ) 19,20) . It is even more interesting to note, that CuChNP exhibited superior antibacterial on S. mutans in biofilm state grown on a tooth surface.…”

Antimicrobial activity of silver nanoparticles in treating dental caries

“…It is rather difficult to compare our MIC values with other studies due to the particular features of the different bacterial strains and the reduction of the size of silver nanoparticles 6,14,18 . To assure consistency of the MIC value microdilution was performed in triplicate.…”

Polylactic acid (PLA)/Silver-NP/VitaminE bionanocomposite electrospun nanofibers with antibacterial and antioxidant activity

“…Scientific data report also about antibacterial activity of PLA/Ag system against other bacteria as Staphylococcus aureus (Espinosa-Cristóbal et al 2009;MohitiAsli et al 2014) P. aeruginosa, C. albicans, A. niger, and S. cerevisiae (Melaiye et al 2005). Inhibitory effect of PLA could be explained by acidic pH imparted by it to the medium (pH-2) which is not favorable to bacteria growth and due to the residual content of lactic acid.…”

“…Furthermore, antibacterial activity of Ag-NP was found to be dependent on the size of silver particles, since the only nanoparticles that present a direct interaction with the bacteria preferentially have a diameter of approximately 1-10 nm (Morones et al 2005). The smaller particle size provides improved antibacterial activity (Espinosa-Cristóbal et al 2009). …”