Table 2.

Antibacterial properties of the CS₁/PVA_0.5E₂ and CS₁/PVA_0.5B₂ hydrogels against E. coli, P. aeruginosa, S. aureus, and K. pneumoniae.

	Hydrogel	CS1/PVA0.5E2				CS1/PVA0.5B2
Microorganism		Zone 0	Zone 1	Zone 2	Zone 3	Zone 0	Zone 1	Zone 2	Zone 3
E. coli		‒	‒	+	+	‒	‒	+	+
P. aeruginosa		‒	+	+	+	‒	+	+	+
S. aureus		‒	+++	+++	+++	‒	+++	+++	+++
K. pneumoniae		‒	++	++	++	‒	++	++	++

‘‒’ no effect; ‘+’for d_iz < 15 mm; ‘++’ for 15 mm < d_iz < 25 mm; ‘+++’ for d_iz > 25 mm.