Potency Kappaphycus Alvarezii As Antibacterial Against Aeromonas Salmonicida

Kappaphycus alvarezii is a type of red seaweed (Rhodophyceae). This study aims to determine the effect of K. alvarezii extract in inhibiting the growth of Aeromonas salmonicida bacteria. A. salmonicida in cyprinid fish, can cause erythrodermatitis in carp. Secondary metabolites in K. alvarezii was identified through phytochemical tests. To determine the ability of K. alvarezii to inhibit the growth of A. salmonicida bacteria, a disc diffusion test was performed. The results obtained, K. alvarezii contains tannins, triterpenoids and phenols. In the disc diffusion test, a dose of 34 mg.L-1 had the greatest inhibition zone on the growth of A. salmonicida.

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