Abstract
Batak Onion (Allium chinense G. Don) is one of the species of Allium plant which is used as a flavor enhancer typical for North Sumatran Batak cuisine. In addition, the Batak onion is believed to be a health herbal remedy such as an antibacterial agent. This research aims to determine antibacterial activity of methanol extracts of Batak leeks (Allium Chinense G. Don) on Streptococcus mutans and Bacillus cereus as Positive Gram Bacteria. The method was the agar diffusion method. Methanol extracts of Batak leeks were diluted using Dimethyl sulphoxide (DMSO) with concentration variations (0.88, 1.66 and 2.5)%. DMSO also was used as negative blank. The research model was in Vitro experimental research model.  The results showed that methanol extract of Batak leek had antibacterial activity against S. mutans with inhibition zone diameter (5,10.5,12.7)mm and B. cereus with inhibition zone diameter (10,12.4 , 12.2)mm. The inhibition zone diameter (0) mm for the DMSO as negative blank.
Highlights
The results showed that methanol extract of Batak leek had antibacterial activity against S. mutans with inhibition zone diameter (5,10.5,12.7)mm and B. cereus with inhibition zone diameter (10,12.4, 12.2)mm
Anticancer activity of saponins from Allium chinense against the
Summary
Don) adalah salah satu tanaman spesies Allium yang digunakan sebagai bahan penambah citarasa khas pada masakan suku Batak Sumatera Utara. Penelitian ini bertujuan untuk mengetahui aktivitas antibakteri ekstrak metanol daun bawang Batak Don) terhadap Streptococcus mutans dan Bacillus cereus sebagai bakteri gram positif. Ekstrak metanol daun bawang Batak yang diperoleh kemudian diencerkan dengan menggunakan pelarut dimetil sulfoksida (DMSO) dengan variasi konsentrasi (0.88, 1.66 dan 2.5)%. Model penelitian yang digunakan dalam penelitian ini adalah model penelitian eksperimental secara In Vitro. Hasil penelitian menunjukkan bahwa ekstrak metanol daun bawang Batak memiliki aktivitas antibakteri terhadap S. mutans dengan diameter zona hambat (5,10.5,12.7) mm dan B. cereus dengan diameter zona hambat (10,12.4,12.2) mm dan blanko negatif DMSO (0) mm tidak memiliki nilai untuk menghambat pertumbuhan bakteri
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