Table 1.

Antimicrobial activity of aqueous ethanol and chloroform extracts from three Baccharis species from Northern Chile (diamater of inhibition zone in mm)^*

Plant species	B. microphylla		B. petiolata		B. santelicis
Microorganism	aq. ethanol	chloroform	aq. ethanol	chloroform	aq-ethanol	chloroform
Staphylococcus aureus	8.2 ± 1	13.8 ± 2	15.8 ± 2	3.8 ± 2	23.5 ± 3	8.3 ± 0.9
Enterococcus faecalis	13.2 ± 2	24.5 ± 4	5.5 ± 0.9	4.6 ± 1	7.5 ± 3	26.4 ± 0.8
Bacillus subtilis	>30	28.2 ± 3	15.8 ± 2	23.5 ± 3	28.4 ± 3	23.5 ± 2
Acinetobacter baumanni	5.8 ± 1	4.6 ± 1	5.1 ± 0.8	6.3 ± 1	–	8.3 ± 0.9
Salmonella typhi	8.4 ± 0.9	13.8 ± 2	–	–	–	–

^* The values are the mean of three experiments ± S.E. of the mean. – No inhibition zone.