Abstract
This study aims to determine the antibacterial effect of the Ethanol Extract of Cocor bebek leaves (Kalanchoe pinnata) on the growth of Staphylococcus aureus and Salmonella typhi. The study is a true experimental, using a posttest only control group design with the independent variable being the extract of cocor bebek leaves (Kalanchoe pinnata). This study found that extracts of cocor bebek leaves (Kalanchoe pinnata) with a concentration of 7.5% and 15% had no inhibitory power, while at concentrations of 30% and 60% had weak inhibitory power as the minimum inhibitory power, and a concentration of 100% had inhibitory power, and strong on the growth of Staphylococcus aureus bacteria. Meanwhile for the growth of Salmonella typhi, a concentration of 7.5% from 3 repetitions had an average inhibition zone of 1.2 mm. for a concentration of 15% has an average inhibition zone diameter of 3 repetitions of 2.2 mm. concentration of 30% from 3 rolls has an average inhibition zone of 12.6 mm. for a concentration of 60% has an average inhibition zone of 3 repetitions of 19.8mm. There is antibacterial activity of ethanolic extract of cocor bebek leaf (Kalanchoe pinnata) against the growth of Staphylococcus aureus and Salmonella typhi.
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