NOVI DWI ARDIYANTI, 061311133217 (2017) DAYA ANTIBAKTERI EKSTRAK DAUN JAMBU BIJI (Psidium guajava L.) TERHADAP PERTUMBUHAN BAKTERI Salmonella Ser. Pullorum SECARA In vitro. Skripsi thesis, Universitas Airlangga.

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Abstract

The guava leaves (Psidium guajava L.) was known have several active substances such as tanins, flavonoids and saponins. Which are potential as antimicrobial agents. The aim of this research is to prove the effectivity of extract of guava leaves as an antimicrobial against Salmonella Ser. pullorum in vitro. Dilution method with eleven concentrations and two controls was used in this research to determine Minimum Inhibitory Concentration (MIC) and continued by streaking on Salmonella-Shigella Agar (SSA) to determine Minimum Bacteriocide Concentration (MBC). The treatment used were : 0,10 g/ml, 0,09 g/ml, 0,08 g/ml, 0,07 g/ml, 0,06 g/ml, 0,05 g/ml, 0,04 g/ml, 0,03 g/ml, 0,02 g/ml, 0,01 g/ml, and 0,005 g/ml. control negative and control positive which used antibiotic oxytetracycline, each treatment repeted with 4 repetitions respectively. The obtained data showed that the ectract of guava leaves has antimicrobial effect to Salmonella pullorum with the Minimum Bacteriocide Concentration (MBC) is 0,03 g/ml

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