Fredderick Ian T. Deloso, Jason F. Jaca, Vicor C. Sunio, Jr
Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
ABSTRACT
Essential oils derived from garlic bulbs Allium sativum and lemongrass leaves Cymbopogon citratus were used to enrich bath soap. The soap with proportions of 1:10, 1:20 and 1:30 v/v of essential oil from A. sativum and C. citratus repectively, were tested for antibacterial properties against the common human skin gram-positive bacterium staphylococcus aureus. Tetracycline, a commercial antibiotic, was used as positive control and distilled water, whish was used as solvent for preparing the soap solutions, was the negative control.
The three kinds of soap exhibited antibacterial properties against the test organisms.
One way analysis of variance at 0.05 a for equal sample sizes showed that the diameter zones of inhibition (mm) formed by the soap solutions on the test organisms varied significantly. Ducan’s multiple range test (0.05a) showed that the diameter zones of inhibitions (mm) on S. aureus decreased in the order: tetracycline >1:30>1:20>1:10>distilled water.