Edward C. Albaracin, Vincent Louie Delfin, Frederick Bedonia (January 1998)
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 study tests the potentials of Mahinot esculenta tubers, Allium sativum rhizome, and Lycopersicon esculantum berries of their anti-microbial effects on Staphylococcus aureus, Escherichia coli, and Bacillus subtilis.
Extracts of garlic, cassava tubers, and tomato berries were made by adding water to a 1:2 solution. The extracts were tested for their anti-microbial effects using the Filter Paper Disc-Agar Plate Method with millimeters as the unit of measurement. Random Block Analysis of Variance and Duncan’s multiple range test method at a 0.05 level of significance were used to test if there is a significant difference in the anti-bacterial effects of the extracts.
Results showed that garlic, cassava and tomato have anti-bacterial effects on the test organisms.
There is a significant difference on the zones of inhibition of the different extracts as anti-microbial agents on Bacillus subtilis, Escherichia coli, and Staphylococcus aureus. Antibacterial activity of the treatments on Escherichia coli decreased in this order Ciprofloxacin>Allium sativum rhizome >Mahinot esculenta tubers>Lypersicon esculantum berries>Distilled H20. Antibacterial activity of the treatments on Staphylococcus aureus decreased in this order Ciprofloxacin>Allium sativum rhizome >Mahinot esculenta tubers>Lypersicon esculantum berries>Distilled H20. Antibacterial activity of the treatments on Bacillus subtilis decreased in this order Ciprofloxacin>Allium sativum rhizome >Mahinot esculenta tubers>Lypersicon esculantum berries>Distilled H20.