Ethnomedicinal Studies, Chemical Composition, and Antibacterial Activity of the Mammea americana L. Bark in the Municipality of Cértegui, Chocó, Colombia

Table 4

Results of antibacterial activity of M. americana bark extract (n = 3).

Strain/extract	Ethanolic extract (mg/ml)					Aqueous extract (mg/ml)					Positive control (streptomycin) (10 μg/ml)	Negative control
	20	10	5	2.5	0.5	20	10	5	2.5	0.5
	The diameter of zone of inhibition
Bacillus subtilis (ATCC 6633)	—	—	—	—	—	—	—	—	—	—	24.5 ± 0.15	—
Staphylococcus aureus (ATCC 25923)	22.6 ± 0.10	18.5 ± 0.10	15.6 ± 0.12	10.2 ± 0.15	8.2 ± 0.25	18.5 ± 0.15	15.1 ± 0.15	12.6 ± 0.25	6.4 ± 0.10	2.8 ± 0.12	28.4 ± 0.21	—
Escherichia coli (ATCC 25922)	19.6 ± 0.17	16.8 ± 0.25	13.4 ± 0.44	6.4 ± 0.15	3.3 ± 0.12	12.4 ± 0.10	10.1 ± 0.10	8.3 ± 0.15	3.4 ± 0.15	1.5 ± 0.15	28.4 ± 0.21	—
Pseudomonas aeruginosa (ATCC 13076)	—	—	—	—	—	—	—	—	—	—	20.4 ± 0.21	—