Table 1.

Minimum inhibitory concentration (MIC) of chitosan and oligochitosan against acne-related bacteria

Strains	Oligochitosan (MW 1 kDa)		Oligochitosan (MW 3 kDa)		Oligochitosan (MW 5 kDa)		Oligochitosan (MW 10 kDa)		Chitosan (MW 250 kDa)
	MIC	MBC	MIC	MBC	MIC	MBC	MIC	MBC	MIC	MBC
S. aureus KCTC1927	4096	8192	4096	8192	2048	4096	4096	8192	128	512
S. epidermidis KCCM 40416	4096	8192	4096	8192	2048	4096	4096	8192	512	1024
P. acnes KCTC 3314	512	1024	32	64	32	64	16	32	512	2048
P. acnes isolate 2874	512	1024	64	256	32	64	32	64	512	2048
P. acnes isolate 2875	512	1024	128	512	64	128	64	128	512	2048
P. acnes isolate 2876	512	1024	64	128	64	128	32	64	512	2048
P. acnes isolate 2877	512	1024	64	256	32	128	32	64	512	2048
P. acnes isolate 2878	512	1024	128	256	64	128	64	64	512	2048