Table 4.

MIC and MBC results of of H. humifusum and H. perfoliatum extracts against selected bacterial and yeast strains.

	CON+		H. humifusum		H. perfoliatum
Bacterial strain	MIC	MBC	MIC	MBC	MIC	MBC
Escherichia coli G(−)	18.5	25	350	500	350	600
Salmonella typhimurium G(−)	15	24	500	550	500	650
Pseudomonas aeruginosa G(−)	1.6	3.5	300	600	350	650
Pseudomonas aeruginosa G(−)	1	2.5	300	600	350	600
Enterococcus faecium G(+)	10.5	13	250	400	450	500
Staphylococus aureus G(+)	5	10.5	250	400	300	400
Staphylococcus epidermidis G(+)	6.5	12	200	350	350	450
Bacillus subtilis G(+)	15	30	350	350	350	450
Candida albicans	5	11.5	300	350	250	350

CON+: positive control, antibiotic: Ampicillin for all strains except for Pseudomonas aeruginosa where positive control and Gentamicin.

MIC: minimal inhibitory concentration (μg mL⁻¹).

MIC was defined as the lowest concentration of the compounds produced >95% growth reduction compared with the growth in the control well.

MBC: minimum bactericidal concentration (μg mL⁻¹).