Journal of Agriculture & Life Sciences

Effectiveness of Some Concentration Star Fruit Leaf Extracts to Growth of Streptococcus sanguis
Minasari, Sri Amelia, Yolanda Simatupang

Abstrak
Star fruit leaves play an antibacterial that has composition of flavonoids, tannins, saponins, triterpenoids, its function destroys bacterial cells, protein denaturation, causing increased permeability of cell membranes to make bacterial cell lysis. Streptococcus sanguis serves as the attachment of other microorganisms that colonize the tooth surface, forming dental plaque, contributing to caries development, Recurrent Aftosa Stomatitis (RAS) and periodontal disease. Streptococcus sanguis serves as the attachment of other microorganisms that colonize the tooth surface, forming dental plaque, contributing to caries development, Recurrent Aftosa Stomatitis (RAS) and periodontal disease. The purpose of this research is to know the effectivity level of MIC and MBC of star fruit leaf extract on the growth of Streptococcus sanguis bacteria from concentration 60%, 40%, 20%, 10%, 5%. This research method is experimental laboratory with post-test only control group design. The effectiveness test of star fruit leaves extract on the growth of Streptococcus sanguis with dilution method. Leaves extract of star fruit made by maceration technique from each concentration then added suspension of Streptococcus sanguis bacteria, repetition done four times repetition then conducted observation. The data analysis used is one way ANOVA test. The result showed that MIC concentration of the extract on the growth of Streptococcus sanguis was 5% and MBC was 10%. The conclusion of this study, starfruit leaf extract has effectiveness against Streptococcus sanguis.

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