Date of Completion
Plant Extract, Escherichia coli, Staphylococcus aureus, Antibacterial agents, antibacterial properties, oregano, tawa-tawa, Ipomoea batatas, Origanum vulgare, Psorolea corylifolia, sweet potato
In this study, the leaf extracts of Ipomoea batatas, Origanum vulgare, and Psorolea corylifolia were tested for antibacterial properties against Escherichia coli and Staphylococcus aureus using disc-diffusion assay. Ethanol was used as a solvent while Mueller Hinton agar plates were used to test for the antibacterial action of the plant extracts. The result of the zones of inhibition showed that the leaf extract of Ipomoea batatas, Origanum vulgare, and Psorolea corylifolia exhibit no significant effect against the two sample bacteria. For the difference in relation to their different concentrations, Origanum vulgare lack any zone of inhibition and Ipomoea batatas showed an insignificant difference (P value > 0.05) on both bacteria. Psorolea corylifolia's zone of inhibition showed no significant difference against Escherichia coli; however, it showed a significant difference (P value = 0.00) when tested against Staphylococcus aureus. The different concentrations of Ipomoea batatas, Origanum vulgare, and Psorolea corylifolia leaf extracts did not yield a >15mm zone of inhibition. This means that the plants did not meet the standard zone of inhibition.
Pancho E. Ercilla
Caspillo III, W. D., Espinosa, M. J., Evangelista, M. L., Manaig, J. M., Pakingan, J. M., & Sales, P. P. (2019). Assessment of the antibacterial properties of Ipomoea batatas (sweet potato), origanum vulgare (oregano), and Psorolea corylifolia (tawa-tawa) leaf extracts on Escherichia coli and Staphylococcus aureus. [Research output, De La Salle Medical and Health Sciences Institute]. GreenPrints. https://greenprints.dlshsi.edu.ph/grade_12/40/