Table 4.

Minimum inhibitory concentration of extract and fractions

Microorganism	Minimum inhibitory concentration (MIC) (mg/ml)
	ME	HF	MF
Ps. fluorescens (Isolate 1)	0.125	0.25	0.25
Ps. fluorescens (Isolate 2)	-	-	-
Ps. fluorescens (Isolate 3)	0.25	0.5	0.5
Ps. fluorescens (Isolate 4)	0.125	-	0.5
Ps. fluorescens (Isolate 5)	0.25	0.25	-
Ps. fluorescens (Isolate 6)	-	0.25	0.125
Ps. fluorescens (Isolate 7)	0.125	0.5	0.125
Ps. aeruginosa (ATCC 10145)	0.125	-	-
Staph. aureus (Isolate 1)	0.5	0.5	0.063
Staph. aureus (ATCC 12600)	-	-	0.25
Control	-	-	-

Control = 10% Dimethylsulfoxide (DMSO)

ME = Methanol extract; HF = n-Hexane fraction; MF = Methanol fraction - = No activity