Table 2.

The MIC and MBC values of the purified substances from SPR-20. The active substances from RPC were used to determine the antimicrobial activity. The standard antibiotics (vancomycin and cefoxitin) were used as the positive controls.

Active Substance	Tested Strains	MIC (µg/mL)	MBC (µg/mL)
P1	S. aureus TISTR 517	2	4
	MRSA isolate 142	2	4
	MRSA isolate 1096	2	4
	MRSA isolate 2468	2	4
P2	S. aureus TISTR 517	8	16
	MRSA isolate 142	8	64
	MRSA isolate 1096	8	64
	MRSA isolate 2468	8	64
P3	S. aureus TISTR 517	4	4
	MRSA isolate 142	4	8
	MRSA isolate 1096	4	8
	MRSA isolate 2468	4	8
P4	S. aureus TISTR 517	8	8
	MRSA isolate 142	8	16
	MRSA isolate 1096	8	16
	MRSA isolate 2468	8	16
P5	S. aureus TISTR 517	32	32
	MRSA isolate 142	32	32
	MRSA isolate 1096	32	32
	MRSA isolate 2468	32	32
Vancomycin	S. aureus TISTR 517	2	2
	MRSA isolate 142	2	2
	MRSA isolate 1096	2	2
	MRSA isolate 2468	2	2
Cefoxitin	S. aureus TISTR 517	2	2
	MRSA isolate 142	>64	ND
	MRSA isolate 1096	>64	ND
	MRSA isolate 2468	>64	ND