Antibacterial Efficacy of Susu Banana ( Musa paradisiaca L.) Peel Methanol Extract and The Total Contents of Flavonoid and Phenolic Compounds

Abstract

Banana peels contain antimicrobial properties. The objectives of this study are to determine the antibacterial efficacy of the methanol extract of susu banana peels and to quantify the total amount of phenolic and flavonoid components present. Maceration techniques were used for the extraction. The agar diffusion method was applied to determine antibacterial efficacy. The UV-Vis Spectrophotometry technique was performed to determine the amounts of phenolic and flavonoid. S. aureus and E. coli were severely inhibited by the methanol extract. With an increase in extract concentration, the antibacterial activity increased. The Minimum Bactericidal Concentration (MBC) was 4 and 15%, but the Minimum Inhibitory Concentration (MIC) was 3 and 10%, respectively. The methanol extract had a total of 1883,73 mg QE/100 g extracts of flavonoids and 273,09 mg GAE/100 g extracts of phenolics, respectively.