Abstrak

Baca Juga : UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL BUNGA ROSELLA (HIBISCUS SABDARIFFA LINN.) TERHADAP BAKTERI PROTEUS SP. DARI ISOLAT KLINIS (INDAH PUSPITA PUTRI, 2014) ,

Baca Juga : UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL BUNGA ROSELLA (HIBISCUS SABDARIFFA LINN) TERHADAP PSEUDOMONAS AERUGINOSA DARIRNISOLAT KLINIS (Mahda Rizki Liana, 2014) ,

,4 mm, 14,4 mm, 18,6 mm dan 20,4 mm. sementara itu rata-rata diameter zona hambat yang dihasilkan oleh kelompok kontrol positif dan kontrol negatif masing-masing adalah 21,6 mm dan 0 mm. hasil analisis data di peroleh bahwa ekstrak bunga rosella kosentrasi 12,5%, 25%, 50%, dan 75% menunjukkan perbedaan yang nyata dalam menghambat pertumbuhan klebsiella pneumoniae dibandingkan kontrol negatif dan positif pada taraf 5%. semakin tinggi kosentrasi ekstrak maka semakin besar zona hambat yang terbentuk. ekstrak etanol bunga rosella dengan kosentrasi 75% memiliki aktifitas antibakteri yang kuat terhadap klebsiella pneumoniae. kata kunci : ekstrak hibiscus sabdariffa l, antibakteri, klebsiella pneumoniae, in vitro abstract rosella is one of traditional medicine that has antibacterial activity. this research is aims to determine the antibacterial activity ethanol extract of the rosella (hibisus sabdariffa linn) in inhibitaion the growth of klebsiella pneumoniae. the method of this research is laboratory experiment using completely randomized design which has divided into 4 treatment group and 2 control group. repetitions of each treatment was done 5 times. the treatment group consist of rosella extract with cocentration 12,5%, 25%, 50%, and 75%. positive control was used meropenem 10 ug and negative control was used akuades. antibacterial activity tes was used kirby bauer disc diffusion method. data of this research were analyzed by anova followed by duncan. the results showed that rosella extract in cocentration 12,5%, 25%, 50%, and 75% provide average inhibitaion area 11,4 mm, 14,4 mm, 18,6 mm and 20,4 mm. positive control and negaive control provide average inhibitaion area 21,6 mm and 0 mm. the data analyzed test results showed that rosella extract in cocentration 12,5%, 25%, 50%, and 75% had significant differences with negative control and positive control in inhibitation of klebsiella pneumonia. the higher cocentration of extract, the greater inhibitation area was formed. rosella extract in cocentration 75% had antibacterial activity againts klebsiella pneumoniae. keyword : hibiscus sabdariffa l extract, antibacterial, klebsiella pneumoniae, in

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