Synthesis and Characterization of O-Acetyl-chitosan Acetic Ester

Table 4

Inhibition rate of chitosan (CS) and O-acetyl-chitosan acetic ester (ACHA) on P. aeruginosa.^a

Sample concentration (%) (w/v)	0.03125	0.0625	0.125	0.25	0.5	1
	Inhibition rate (%)
Acetic acid	2.5 ± 1.3	8.1 ± 1.2	14.3 ± 1.2	16.2 ± 1.4	18.8 ± 1.1	23.6 ± 1.7
CS	20.6 ± 1.9	48.3 ± 2.1	55.8 ± 1.3	63.1 ± 1.7	76.1 ± 1.1	88.2 ± 1.2
ACHA	24.1 ± 1.6	52.6 ± 1.2	64.3 ± 2.1	73.3 ± 1.4	81.3 ± 1.2	94.7 ± 1.1

^aValues represent mean ± S.D., . P. aeruginosa: Pseudomonas aeruginosa.