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Langsat fruit seeds (Lansium domesticum Corr) are part of the plant that is known to be antibacterial. Therefore, exploration of langsat fruit as an antibacterial is needed. The purpose of this study was to determine the antibacterial activity of langsat fruit seeds against Staphylococus aureus and Klebsiella pneumoniae using the disc method and the well method. Langsat fruit seed powder was macerated using the maceration method with n-hexane solvent and tested for antibacterial activity. Inhibition of the n-hexane extract of langsat fruit seeds showed the largest clear zone diameter value given by the lowest concentration of 10% by the disc and sumurun method on the Staphylococus aureus and Klebsiella pneumoniaes bacteria 13.6 mm; 12.6 mm; 13 mm; and 14.6 mm. This shows that the n-hexane extract of langsat fruit seeds has strong antibacterial activity against Staphylococus aureus and Klebsiella pneumonia bacteria both by the disc method and the well method.

UJI AKTIVITAS ANTIBAKTERI EKSTRAK N-HEKSAN BIJI BUAH LANGSAT (Lansium domesticum Corr) TERHADAP BAKTERI Staphylococus Aureus DAN Klebsiella Pneumoniae