Table 3.

Minimum inhibitory concentration (MIC₈₀) of selected medicinal plant extracts on E. coli, P. aeruginosa, S. aureus, B. subtilis and S. pyogenes.

		MIC80 (µg/mL)
Test Bacteria	Treatment	Ethanolic Extracts	Aqueous Extracts
Escherichia coli	erythromycin	30.56–42.88
	A. vulneraria	N.D.	N.D.
	F. magellanica	N.D.	N.D.
	F. triphylla	N.D.	N.D.
	L. nummularia	N.D.	N.D.
Pseudomonas aeruginosa	erythromycin	69.91–82.76
	A. vulneraria	N.D.	N.D.
	F. magellanica	55.03–58.91	N.D.
	F. triphylla	49.03–58.87	N.D.
	L. nummularia	N.D.	N.D.
Staphylococcus aureus	erythromycin	0.09–0.25
	A. vulneraria	715.90–835.92	N.D.
	F. magellanica	4.81–7.65	17.13–25.03
	F. triphylla	5.32–6.73	30.24–36.99
	L. nummularia	1063.75–1181.29	N.D.
Bacillus subtilis	erythromycin	0.10–0.18
	A. vulneraria	288.02–313.01	N.D.
	F. magellanica	13.91–15.72	52.73–65.03
	F. triphylla	14.55–22.66	33.16–45.33
	L. nummularia	160.90–164.28	N.D.
Streptococcus pyogenes	erythromycin	0.08–0.09
	A. vulneraria	220.06–236.30	N.D.
	F. magellanica	11.83–14.99	41.72–44.91
	F. triphylla	11.61–17.92	41.95–43.23
	L. nummularia	179.43–203.56	N.D.

Five independent experiments, each in three replicates, compared with erythromycin as positive control. N.D.: not detected.