In Vitro Antibacterial and Antibiofilm Activities of Chlorogenic Acid against Clinical Isolates of Stenotrophomonas maltophilia including the Trimethoprim/Sulfamethoxazole Resistant Strain

Table 1

Zone of inhibitions, MICs, and MBCs of chlorogenic acid against S. maltophilia.

Isolate number	Zone of inhibition in diameter (mm)^a
	20 𝜇L of chlorogenic acid (32 𝜇g mL^−1)	TMP/SMX^b (30 𝜇g)	DMSO (10%)	MIC (𝜇g mL^−1)^c	MBC (𝜇g mL^−1)^d
4	29	0	—	16	32
16	20	32	—	8	32
24	17	31	—	8	32
26	18	31	—	8	32
30	27	32	—	8	16
40	19	32	—	8	32
49	26	32	—	8	16
51	24	32	—	16	32
53	25	32	—	8	32
ATCC 13637	27	31	—	8	16

^aDetermined by disk diffusion assay.
^bTrimethoprim/sulfamethoxazole.
^cDetermined by macrobroth dilution method.
^dDetermined by plate colony count technique.
—: No zone of inhibition.