The Effect of Ag Content of the Chitosan-Silver Nanoparticle Composite Material on the Structure and Antibacterial Activity

Table 1

Antibacterial effect of chitosan-Ag nanoparticle composite materials.

Minimum Bactericidal Concentration, MBC (ppm)
Material	S. Pneumoniae	A. Boumanni	E. Coli	P. Aeruginosa	E. Faecalis	S. Aureus
Composite A	100–200	50–100	100–200	50–100	50–100	50–100
Composite B	100–200	50–100	50–100	25–50	50–100	50–100
Composite C	50–100	25–50	50–100	<25	25–50	25–50
Pure chitosan	200–400	>400	>400	>400	200–400	>400

Composite A: Chitosan-Ag nanoparticle material synthesized with 0.02 M AgNO₃; Composite B: Chitosan-Ag nanoparticle material synthesized with 0.04 M AgNO₃; Composite C: Chitosan-Ag nanoparticle material synthesized with 0.06 M AgNO₃.