Table 2.

The yield of Robinia pseudoacacia flower and leaf extracts (dry extract mass obtained by the initial mass; mg/g) in different solvents; cytotoxicity (LC₅₀; mg/mL) against Vero African green monkey kidney cells; minimum inhibitory concentration (MIC; mg/mL); total antimicrobial activity (TAA; yield/MIC) after 24 h of incubation (mL/g); selectivity indices (SI; LC₅₀/MIC); gentamicin was used as a positive control against test bacteria and amphotericin-B against test fungi.

Plant/Organ	Solvent	Yield	LC50	Pseudomonas aeruginosa			Staphylococcus aureus			Bacillus cereus			Candida albicans			Candida parapsilosis
				MIC	TAA	SI	MIC	TAA	SI	MIC	TAA	SI	MIC	TAA	SI	MIC	TAA	SI
RL	70% EtOH	204	0.11	0.63	324	0.17	>2.5	82	0.04	0.63	324	0.17	2.5	82	0.04	2.5	82	0.04
	80% MeOH	247	0.11	0.63	392	0.17	2.5	98	0.04	0.63	392	0.17	0.63	392	0.17	0.63	392	0.17
RF	70% EtOH	264	>1	>2.5	106	0.4	>2.5	105	>0.04	0.63	419	>1.59	2.5	105	0.04	1.25	211	0.8
	80% MeOH	254	>1	0.63	403	>1.59	2.5	101	0.04	0.63	403	>1.59	1.25	203	0.08	2.5	101	0.4
Gentamicin				0.0003			0.00013			0.0005
Amphotericin-B													0.000488			0.001953

RL—R. psedudoacacia leaf extract, RF—R. pseudoacacia flower extract; the LC₅₀ of Doxorubicin, the positive control, was 0.012 mg/mL.