Potential Effect of Giant Freshwater Prawn Shell Nano Chitosan in Inhibiting the Development of Streptococcus mutans and Streptococcus sanguinis Biofilm In Vitro

Figure 3

Representative SEM images showing reduction of S. mutans and S. sanguinis biofilm masses after exposure with varying concentrations of PSNC for 24 and 48 h. In untreated control groups, the biofilm is clearly visible with the bacteria embedded in EPS. The biofilm masses become less after being exposed to PSNC for 24 and 48 h.