Antimicrobial activity of turmeric leaf extract against Escherichia coli, Staphylococcus aureus, Shigella dysenteriae, and Lactobacillus acidophilus

Indonesia is a country known for its diversity of plants, especially agricultural products and spices, which have the potential as antimicrobials, such as turmeric leaves (Curcuma domestica Val.). This study aimed to determine the antimicrobial activity of turmeric leaf extract. The method used was a completely randomized design with two factors, namely extraction method with maceration using water, methanol and ethyl acetate as the solvent, and concentration of turmeric leaf extract of 20%, 40%, 60%, and 80%. Turmeric leaf extract gave an inhibitory effect to the growth of Escherichia coli, Staphylococcus aureus, and Shigella dysenteriae, and did not give inhibitory effect to the growth of Lactobacillus acidophilus.