Characterization and Synergistic Antimicrobial Evaluation of Lipopeptides from Bacillus amyloliquefaciens Isolated from Oil-Contaminated Soil

Table 3

MIC of SRF and AMP used alone and in combination against P. aeruginosa ATCC 27853.

Antimicrobial	MIC (μg/mL)		FIC	Effect
	Alone	In combination
SRF, AMP	>1024, 256	16, 128	0.52	Additive
SRF, AMP	>1024, 256	32, 64	0.28	Synergy
SRF, AMP	>1024, 256	64, 64	0.31	Synergy
SRF, AMP	>1024, 256	128, 64	0.38	Synergy
SRF, AMP	>1024, 256	256, 64	0.50	Synergy
SRF, AMP	>1024, 256	512, 64	0.63	Additive

SRF, surfactin; AMP, ampicillin.