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. 2016 Mar 1;3(1):8. doi: 10.3390/medicines3010008

Figure 5.

Figure 5

Figure 5

Antimicrobial activity of Ag+ hydrogels formulated with (A) low-viscosity chitosan; (B) medium-viscosity chitosan; and (C) high-viscosity chitosan. Error bars represent the standard deviation and n = 3. In all control experiments (using hydrogels without Ag+), there was no observed ZOI (data not shown). Statistical analysis using ANOVA indicated no significant difference in the antimicrobial activity of the formulations against the selected microorganisms (p > 0.05). The codes shown in the figure key describe the following: CL1.25 = 1.25% w/v low-viscosity chitosan, CL2.5 = 2.5% w/v low viscosity chitosan, CM1.25 = 1.25% w/v medium viscosity chitosan, CM2.5 = 2.5% w/v medium-viscosity chitosan, CH1.25 = 1.25% w/v high-viscosity chitosan, CH2.5 = 2.5% w/v high-viscosity chitosan, Ag0.75 = 0.75% w/v AgNO3 solution, Ag1 = 1.0% w/v AgNO3 solution, Ag2 = 2.0% w/v AgNO3 solution, PVA = PVA 30–70 kDa and the volume of the components used in each formulation are shown in the brackets.