Antibacterial Potential of Aloe weloensis (Aloeacea) Leaf Latex against Gram-Positive and Gram-Negative Bacteria Strains

Table 1

Antibacterial activity of different concentrations of Aloe weloensis leaf latex.

Diameter of inhibition zone (mm)
Microorganisms	Leaf latex (400 mg/ml)	Leaf latex (500 mg/ml)	Leaf latex (600 mg/ml)	DMSO (30 µl/ml)	Ciprofloxacin (5 μg/disc)
S. aureus	16.16 0.16^a	18.23 0.12^a	25.93 0.066^a	—^a	27.03 0.03^a
E. coli	5.03 0.03^a	8.10 0.10b^a	10.10 0.05^a	—^a	26.36 0.18^a
P. aeruginosa	12.13 0.08^a	14.06 0.06^a	11.06 0.06^a	—^a	27.00 0.00^a
E. fecalis	15.10 0.10^a	17.03 0.03^a	14.16 0.12^a	—^a	27.06 0.03^a

Results are given as mean ± SEM of ZI (excluded the diameter of the well) in mm (). ^aStatistical significance at (Duncan test); —, no zone of inhibition.