UJI AKTIVITAS ANTIBAKTERI EKSTRAK RIMPANG LENGKUAS MERAH (Alpinia purpurata K. Schum) TERHADAP BAKTERI Klebsiella pneumonia ISOLAT URIN PADA PENDERITA INFEKSI SALURAN KEMIH

ABSTRACTRed galangal rhizome is a plant that has various properties including as an antibacterial and antifungal. Red galangal rhizome in addition to containing essential oils also contains flavonoid, phenol and terpenoid compounds. Red galangal is also used as a basic ingredient of modern medicine. The content of flavonoid compounds which are thought to inhibit the growth of bacteria. This study aims to determine the antibacterial activity of red galangal rhizome extract (Alpinia purpurata K.Schum) against the growth of Klebsiella pneumoniae bacteria of urine isolates in urinary tract infections patients. Red galangal rhizome plants were extracted by maceration method using 96% ethanol solvent. Antibacterial activity test was carried out using the disc and wells method. The results showed that the red galangal rhizome extract has antibacterial activity against the bacteria Klebsiella pneumoniae. In the disc method for concentrations of 80%, 60%, 40%, 20% and 10% the average diameter of the clear zone is 13 mm, 12.3 mm, 10.6 mm, 10.5 mm and 9.8 mm. The ability of antibacterial activity is included in the strong category because it has an inhibition of 10-20 mm. In the method of wells the average diameter of the clear zone is 15.6 mm, 14.6 mm, 13.6 mm, 13 mm and 11.3 mm. The ability of antibacterial activity in the well method of concentrations of 80%, 60%, 40%, 20% and 10% is included in the strong category because the average diameter of inhibition is 10-20 mm.Keywords: Alpinia purpurata K. Schum, Klebsiella pneumoniae, Red Galangal Rhizome ABSTRAKRimpang Lengkuas merah merupakan tanaman yang memiliki berbagai khasiat di antaranya sebagai antibakteri dan antijamur. Rimpang Lengkuas merah selain mengandung minyak atsiri juga mengandung golongan senyawa flavonoid, fenol dan terpenoid. Lengkuas Merah juga digunakan sebagai bahan dasar obat-obatan moderen. Kandungan senyawa flavonoid yang diduga dapat menghambat pertumbuhan bakteri yang telah resisten antibiotik. Penelitian ini bertujuan untuk mengetahui aktivitas antibakteri ekstrak rimpang Lengkuas merah (Alpinia purpurata K.Schum) terhadap pertumbuhan bakteri Klebsiella pneumoniae isolat urin pada penderita infeksi saluran kemih. Tanaman rimpang Lengkuas merah di ekstraksi dengan metode maserasi menggunakan pelarut etanol 96%. Uji aktivitas antibakteri dilakukan dengan metode cakram dan sumuran. Hasil penelitian menunjukkan bahwa ekstrak rimpang Lengkuas merah memiliki aktivitas antibakteri terhadap bakteri Klebsiella pneumoniae. Pada metode cakram untuk konsentrasi 80%, 60%, 40%, 20% dan 10% rata-rata diameter zona beningnya 13 mm, 12,3 mm, 10,6 mm, 10,5 mm dan 9,8 mm. Kemampuan aktivitas antibakteri termasuk dalam kategori kuat karena memiliki daya hambat 10 – 20 mm. Pada metode sumuran rata-rata diameter zona beningnya ialah 15,6 mm, 14,6 mm, 13,6 mm, 13 mm dan 11,3 mm. Kemampuan aktivitas antibakteri pada metode sumuran konsentrasi 80%, 60%, 40%, 20% dan 10% termasuk dalam kategori kuat karena rata-rata diameter daya hambatnya 10 – 20 mm.Kata kunci : Rimpang Lengkuas merah, Alpinia purpurata K.Schum, Klebsiella pneumonia