Julie Marie T. Garcia, Katrina Nicole A. King, Andrea Victoria T. Penaredondo
Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
ABSTRACT
This experimental study using Static Group Comparison in a Completely Randomized Design aimed to determine the antibacterial potentials of some local plants, namely, Onion (genus Allium), the Garlic (Allium sativum), and the Turmeric (Curcuma longa) against some common bacterial pathogens, namely Staphylococcus aureus, Escherichia Coli, Bacillus subtilis, and Pseudomonas aeruginosa. Cultures of the pathogens were treated with triplicates of the antibacterial discs immersed in the plant extracts, as well as with the triplicates of commercial antibacterial discs. The zones of inhibition around each discs was measured and compared among the plant extract treatments and the commercial antibacterial discs. The One Way Analysis of Variance and Tukey HSD Test (0.05 alpha level) was used to determine if there is a significant difference in the antibacterial potentials of the plants extracts on the different test organisms.
Results of this study showed that one of the three extracts from local plants , garlic is the most potent against S. aureus, E. coli, B. subtilis and P. aeruginosa, followed by turmeric. Onion did not show any antibacterial potency.