Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
Faye Margaret R. Fantilinan, Hazel G. Garcia, Jane T. Habaradas (March 2006)
ABSTRACT
This study identified the common angiosperms growing in Mt. Bayoso, Passi Central Iloilo, and further subjected the plants for phytochemical screening antibacterial screening. It specifically documented the presence of alkaloids, saponins and tannins. It also checked for antibacterial properties against the bacterium Staphylococcus aureus.
The plant specimen that was collected underwent ethanol extraction after which the extracts were used for phytochemical screening and antibacterial testing under standard procedures.
Among the 13 plants collected and identified, results showed that all were positive for saponins and negative for alkaloids. In the tannin testing all were positive except for Basella rubra Linn, commonly known as Alogbate. In the antibacterial testing, ethanol was used as the negative control and Tetracyclin was used as the positive control. Results of the antibacterial testing showed that four plants were nagative of antibacterial properties against. S. aureus. The plants were Celosia argentea, Solanum melongena Lim, Terminalia catappa J. and Gmelina arborea J.