Abstract:
Aloe vera is a perennial draught resistant plant containing more amount of gel in fluctuating
amount at different seasons. The plant contains mineral elements such as calcium, iron and
zinc. Its gels also contain polysaccharides, proteins, lipids, sugars, minerals, phenolic
compounds, glucomannan and acemannan. These components have been found to accelerate
wound healing, activating macrophages, stimulating immune system as well as antibacterial
and antiviral effects. Acemannan is effect as indirect anti-microbial activity through its ability
and stimulate phagocytic leukocytes. The efficacy of Aloe liquid as an antibacterial agent in
other areas is shown to have a wide range against gram positive and gram negative bacteria.
However, there has been no elucidation for the antimicrobial capability for the Embu varieties.
The aim of this study was to evaluate antimicrobial activity of aloe vera gel such as
antibacterial, and antifungal activity. Extraction and assay of active ingredients involved
ethanol extraction, inoculation onto the bacterial Bacillus subtilis cultures and monitoring the
inhibition effect. Measures of the zone of inhibition was done on three sets of the same
experiment and the best sample reported for further investigation. The results showed that Aloe
vera is a potential inhibitor of growth of B. subtilis and therefore probably other disease causing
microbes. This study provided provided useful information to citizens on the best variety to be
used in controlling certain infections.
