Uji Aktivitas Daya Hambat terhadap Bakteri Gram Positif dan Bakteri Gram Negatif Menggunakan Metode Sumur Difusi
JURNAL BIOSHELL
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Title |
Uji Aktivitas Daya Hambat terhadap Bakteri Gram Positif dan Bakteri Gram Negatif Menggunakan Metode Sumur Difusi
Uji Aktivitas Daya Hambat terhadap Bakteri Gram Positif dan Bakteri Gram Negatif Menggunakan Metode Sumur Difusi |
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Creator |
Eli Dana Sari
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Description |
Antibiotics are chemical compounds that can be produced by certain microorganisms and can inhibit growth or kill microorganisms. Antibiotics can also be produced by plant cells which are produced from secondary metabolites of the plant itself. To determine the potential or inhibitory activity of an antibiotic against the growth and development of bacteria, a microbiological assessment can be carried out using the diffusion disk method (filter paper (Kirby and Bauer)). As many as seven disk were made of NA (Nutrient Agar) media in a Petri dish. Each sample was sorted to obtain sufficient liquid extract. The extract pipette of each sample with the micropipette in the diffusion disk provided is labeled. The diffusion disk was then inoculated in an incubator using a temperature of 37oC for 48 hours. Negative control (sterile water), positive control (antibiotic Amoxicillin). Inhibition activity of ginger rhizome extract on Gram-positive bacteria was 36.75%, and Gram-negative bacteria was 42.29%. The inhibitory activity of betel leaf extract on Gram positive bacteria was 18.97%, and Gram negative bacteria was 16.6%. Inhibition activity of turmeric rhizome extract on Gram positive bacteria was 17.39%, Gram negative bacteria was 20.94%. The inhibitory activity of juwet leaf extract had the largest percentage of Gram-positive and Gram-negative as much as 73.12%. Meanwhile, the inhibitory activity of mint leaf extract with the smallest inhibition percentage was Gram positive and Gram negative was 0%. Keywords: antibiotics, Nutrient Agar, gram positive bacteria, gram negative bacteria, diffusion disk method Antibiotik merupakan suatu senyawa kimia yang dapat diproduksi oleh mikroorganisme tertentu dan bersifat dapat menghambat pertumbuhan atau membunuh mikroorganisme. Antibiotik juga dapat diproduksi oleh sel tumbuhan yang dihasilkan dari senyawa metabolit sekunder tumbuhan itu sendiri. Untuk mengetahui potensi atau aktivitas daya hambat suatu antibiotik terhadap pertumbuhan dan perkembangan bakteri maka dapat dilakukan assei mikrobiologi dengan metode sumur difusi (kertas saring (Kirby and Bauer)). Media NA (Nutrient Agar) yang sudah memadat pada cawan Petri dibuat sebanyak tujuh sumur. Masing-masing sampel disortasi hingga mendapatkan ekstrak cair yang cukup. Dipipet ekstrak dari masing-masing sampel dengan mikropipet pada sumur difusi yang tersedia, diberikan label. Sumur difusi kemudian diinokulasi di dalam inkubator menggunakan suhu 37oC selama 48 jam. Kontrol negatif (air steril), kontrol positif (antibiotik Amoxicillin). Aktivitas daya hambat ekstrak rimpang jahe pada bakteri Gram positif 36,75%, bakteri Gram negatif 42,29%. Aktivitas daya hambat ekstrak daun sirih pada bakteri Gram positif 18,97%, bakteri Gram negatif 16,6%. Aktivitas daya hambat ekstrak rimpang kunyit pada bakteri Gram positif 17,39%, bakteri Gram negatif 20,94%. Aktivitas daya hambat ekstrak daun juwet memiliki persentase daya hambat terbesar pada Gram positif dan Gram negatif sebesar 73,12%. Sedangkan aktivitas daya hambat ekstrak daun mint dengan presentase hambat terkecil pada Gram positif dan Gram negatif sebesar 0%. Kata Kunci: antibiotik, Nutrient Agar, bakteri gram positif, bakteri gram negatif, metode sumur difusi |
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Publisher |
Pendidikan Biologi,Universitas Islam Jember
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Date |
2021-04-25
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Type |
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
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Format |
application/pdf
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Identifier |
http://ejurnal.uij.ac.id/index.php/BIO/article/view/988
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Source |
JURNAL BIOSHELL; Vol. 10 No. 1 (2021): April; 19-24
JURNAL BIOSHELL; Vol 10 No 1 (2021): April; 19-24 2623-0321 2301-4105 10.36835/bio.v10i1 |
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Language |
eng
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Relation |
http://ejurnal.uij.ac.id/index.php/BIO/article/view/988/900
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Rights |
Copyright (c) 2021 JURNAL BIOSHELL
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