Phytochemical, Cytotoxic, and Antimicrobial Evaluation of Tribulus terrestris L., Typha domingensis Pers., and Ricinus communis L.: Scientific Evidences for Folkloric Uses

Table 4

Diameter zone of inhibition, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) of T. terrestris, T. domingensis, and R. communis extracts.

Organism	Plant extract									Gentamicin (+ve control)
	Tribulus terrestris L.			Typha domingensis Pers.			Ricinus communis L.
	Zone of inhibition (mm, mean ± SEM)	MIC (mg/L)	MBC (mg/L)	Zone of inhibition (mm, mean ± SEM)	MIC	MBC	Zone of inhibition (mm, mean ± SEM)	MIC (mg/L)	MBC (mg/L)
Proteus mirabilis	11.5 ± 0.22	12.5	25	—	—	—	—	—	—	22.0 ± 0.05
Pseudomonas aeruginosa	24.5 ± 0.35	12.5	25	—	—	—	18.5 ± 0.24	12.5	25	20.0 ± 0.08
Staphylococcus aureus	11.5 ± 0.35	6.25	12.5	9.5 ± 0.36	500	—	16.5 ± 0.23	12.5	25	21.0 ± 0.02
Streptococcus faecalis	14.5 ± 0.34	12.5	25	14.0 ± 0.27	250	500	13.5±0.23	250	500	23.0 ± 0.05
K. Pneumoniae	—	—	—	8.5 ± 0.35	500	—	12.0 ± 0.06	250	500	18.5±0.23
E.coli	10.0 ± 0.01	500	—	—	—	—	—	—	—	17.0±0.24
S. epidermidis	—	—	—	—	—	—	—	—	—	17.0 ± 0.09
S. pneumoniae	—	—	—	—	—	—	—	—	—	25.0 ± 0.08
Candida albicans	—	—	—	—	—	—	—	—	—	—