Antibacterial Effects of Aloe Barbedensis Miller (Aloe Vera) Leaf Extract on Some Common Human Pathogens


Ezenwa C. M
Emukah E.
Nnagbo P. A
Obasi C. C.
Ohabuiro B. N. C
Uzoechi A. U
Anorue C. O.
Nwagbaraocha M. A.
Nwachukwu I. O.


The antimicrobial activities of acetone, ethanol and methanol extracts of Aloe vera gel against some common human pathogens namely Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi and klebsiella pneumonia were investigated using the agar well diffusion method. The ethanol and methanol extracts showed higher antimicrobial activity compared to the acetone extract with lower or no antimicrobial activity against the tested pathogens. The differences between the maximum and minimum antibacterial activity of the various extracts on the test organisms were statistically significant. P < 0.05.