Table 1.

MIC values of chlorogenic acid isomers against six microorganisms.

Strains	MIC of six chlorogenic acid isomers (mg/mL)
	3-CA	4-CA	5-CA	ICAA	ICAB	ICAC
E. coli (ATCC25922)	2	4	4	4	4	2
E. coli (C4E2)	4	16	8	8	8	4
S. flexneri (301)	4	8	8	16	16	4
S. aureus (ATCC25933)	8	16	–	32	8	8
B. subtili (ATCC6633)	–	–	16	–	16	8
P. aeruginosa (ATCC15442)	16	16	16	32	8	4

“–”: MIC > 32 mg/mL.