In Vitro Bioactivity of Methanolic Extracts from Amphipterygium adstringens (Schltdl.) Schiede ex Standl., Chenopodium ambrosioides L., Cirsium mexicanum DC., Eryngium carlinae F. Delaroche, and Pithecellobium dulce (Roxb.) Benth. Used in Traditional Medicine in Mexico

Table 4

Antibacterial activity of methanolic extract from Chenopodium ambrosioides fruits (ESM) compared to chloramphenicol (Cm). Values expressed as mean ± 1.96 SEM ( = 3) of the inhibition halo in mm.

Microorganism	Zone of growth inhibition [mm]		Statistical
	ESM (10 μl, 70 mg/ml)	Cm (2 μl, 50 mg/ml)	significance
Enterococcus faecalis	13.3 ± 2.4	22.0 ± 1.1	= 0.003
Salmonella typhimurium	18.0 ± 1.1	37.3 ± 3.5	= 4.8 10^−4
Escherichia coli	12.0 ± 0.6	26.3 ± 2.4	= 3.2 10^−4