Persea Americana Mill Extraction as Antibacteria

Abstract

Abstract Avocado leaves (P. americana ) are a part of plants that can be used as traditional medicines. Avocado leaves contain chemicals such as flavonoids, saponins, tannins and alkaloids which function as pathogenic antibacterial killer. This study aims to describe the antibacterial activity of various concentrations of avocado leaf extract (P. americana) on the growth of Escherichia coli. The extract concentrations were 25%, 50%, 75%, and 100%. This research employed experimental method with post-test group design. Antibacterial activity was measured by the diameter of the clear zone formed. The analysis results, using the Kruskal Walls test with an accuracy level of 0.05, conclude that there are significant differences in the antibacterial power of various concentrations of avocado leaf extract (P. americana ) against E. colibacteria. The most effective concentration to inhibit the growth of E. colibacteria is at concentration 100% with an (inhibition zone) of 6.9 mm including moderate inhibition.