Naufal Rasyid, Ghani (2023) Uji Aktivitas Antibakteri Ekstrak Daun Senduduk(melastoma Malabathricum Linn) Terhadap Bakteri Aeromonas Salmonicida, Edwardsiella Tarda Dan Edwardsiella Ictaluri. Other thesis, Universitas Islam Riau.

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Abstract

This study aims to determine the antibacterial activity of Senduduk leaf extract (M. malabathricum Linn) in inhibiting the growth of pathogenic bacteria namely Aeromonas salmonicida, Edwardsiella tarda and Edwardsiella ictaluri and to determine the best extract concentration to inhibit Aeromonas salmonicida, Edwardsiella tarda and Edwardsiella ictaluri bacteria. The materials used in this study were Senduduk leaves, Aeromonas salmonicida bacteria, Edwardsiella tarda and Edwardsiella ictaluri, ethanol, methanol, NB, NA, disc paper and distilled water. The method used is an experimental method using the Kirby-Bauer disc method, using a Completely Randomized Design (CRD) with 5 treatments and 2 repetitions, namely: 10% concentration, 20% concentration, 30% concentration, 40% concentration and 50% concentration . The results of this study showed that Senduduk leaf extract positively contained Flavonoid, Saponin and Tannin compounds. After the inhibition test was carried out, the concentration of 50% for inhibiting bacterial growth was good for A. salmonicida with an inhibition zone diameter of 19.5 mm and E. tarda with an inhibition zone diameter of 18.5 mm and for E. ictaluri bacteria. with an inhibition zone diameter of 19 mm. The inhibition zone of the bacteria A. salmonicida, E. tarda and E. ictaluri on the Senduduk leaf extract was included in the strong category.

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