Figures legend:
Figure 1. Response surface 3D-plot of optimization of degree of deacetylation (% DD) of chitosan extraction.
Figure 2. Desirability ramp for optimization of (% DD) of chitosan extraction.
Figure 3. Fourier Transform Infrared Spectroscopy (FTIR) of extracted Chitosan from shrimp.
Figure 4. The impact of sub-Minimum inhibitory concentration (MIC) concentrations of shrimp-derived chitosan (CS) on the factors involved in quorum sensing of Pseudomonas aeruginosa. (a): pyocyanin production, (b): rhamnolipid production, (c): swimming motility, (d): protease activity, (e and f): expression of rthIR and lasR genes. Significant differences among the groups are denoted by distinct letters (P<0.05) (n=6).
Figure 5. The impact of sub-MIC concentrations of CS on biofilm formation of Pseudomonas aeruginosa.