AWAN BUDIMAN, 060610244 (2011) DAYA ANTI BAKTERIAL SARI BUAH MENGKUDU (Morinda citrifolia) TERHADAP JUMLAH BAKTERI DAN Escherichia coli PADA SUSU. Skripsi thesis, UNIVERSITAS AIRLANGGA.

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Abstract

The aim of this study was to identify antibacterial potency of noni extract toward the number of bacteria and Escherichia coli in milk. The methods used for this study was TPC (Total Plate Count) to count the number of total bacteria, MPN (Most Probable Number) to calculate the number of Escherichia coli. Experimental design used for this research was completely randomized design that was divided into four treatments and five repetition. The four threatment groups were P0 (10 ml of milk), P1 (9.9 ml milk + 0.1 ml of noni extract), P2 (9.7 ml milk + 0.3 ml of noni extract), and P3 (9, 5 ml milk + 0.5 ml of noni extract). The data obtained were analysed using Anova (analisis of variant). The result showed that the administration of noni extract in milk can reduce the number of total bacteria and total bacteria Escherichia coli especially P3 (9.5 ml milk + 0.5 ml noni extract. Based on statistical data analysis using ANOVA showed that there is a difference between each treatment was highly significant (F calculated> F table 0.01). Based on these results it was known that noni extract had antibacterial effect toward the number of bacteria and Escherichia coli in milk. It was assumed that acubin, levo asperuloside, alizarin, and some anthraquinone substances contained in noni could give antiseptic and antibacterial effect.

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