Paccial, Rodelen, Sevilla, Ceazar, Lopz, Marc Antaeus (2004)
Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
ABSTRACT
The study tested the effectiveness of the antibacterial effect on the malunggay, guava, gumamela, mayan, katakataka, rose, and alibhon, has the most effective antibacterial effect against Staphylococcus and Escherichia coli.
The study was aimed at finding out which of this plants, malunggay, guava, gumamela, mayan, katakataka, rose, and alibhon, has the most effective antibacterial effect against Staphylococcus and Escherichia coli.
The result were measured by counting the diameter of the zones of inhibition after 24 hours incubation period.
The result showed that the malunggay is the most effective antibacterial agent aginst Staphylococcus aureas with a mean zone of inhibition of 19.33 mm.on Escherichia coli, rose is the most effective antibacterial agent with a mean zone of inhibition of 8.33 mm, and 9.33 mm., respectively.
Using one way analysis of Variance, the researcher found out that there os a significant difference among the effectiveness of the antibacterial agents of the local plants against Staphylococcus aureus and Escherichia coli.
On Staphylococcus aureus, the antibacterial effect of the plant extracts decreased in the order: Tetracycline ( Positive control )> Malunggay > Rose > Gumamela > Guava, Alibhon, Mayana > Katakataka > Distilled Water ( Negative Control ).