Peptide Extract from Olivancillaria hiatula Exhibits Broad-Spectrum Antibacterial Activity

Table 2

MIC, MBC, bacteriostatic and bactericidal effects of peptide extract.

Microorganism	MIC (mg/mL)	MBC (mg/mL)	MBC/MIC	Effect
E. coli (-)	0.625	>2.5	>4	static
K. pneumonia (-)	1.25	>2.5	>2	static
S. paratyphi (-)	0.625	2.5	4	static
P. mirabilis (-)	0.039	>2.5	>4	static
N. gonorrhea (-)	0.156	2.5	>4	static
V. cholera (-)	0.315	2.5	>4	static
P. aeruginosa (-)	0.039	1.25	>4	static
S. aureus (+)	2.5	2.5	1	cidal
E. faecalis (+)	2.5	>2.5	>1	Cidal / static

MIC and MBC experiments were replicated thrice; MIC, minimum inhibitory concentration; MBC, minimum bactericidal concentration; MBC/MIC ≤ 2 implies bactericidal; MBC/MIC ≥ 4 implies bacteriostatic [25].