UJI EFEKTIVITAS EKSTRAK BUAH ANGGUR HIJAU (VITIS VINIVERA L) TERHADAP DAYA HAMBAT LAJU PERTUMBUHAN BAKTERI STREPTOCOCCUS MUTANS DAN LACTOBACILLUS ACIDOPHILUS

Streptococcus mutans and lactobacillus are acid-producers of carbohydrates that can be fermented and create the risk for cavity. Green grapes (Vitis vinifera L) is one of the fruit variety that contains the phytochemical from polyphenols class which functions as an inhibitors of glucosylation on plaque formation so that it was used as an antibacterial alternative in caries prevention. The purpose of this research was to determine the effectiveness of green grapes antibacterial towards Streptococcus mutans and lactobacillus acidophilus. The research design that used in this study was
a laboratory experimental (Invitro).This research was conducted in Microbiology Laboratory of Andalas University, Padang City and the maceration was conducted in chemistry laboratoryKopertis region X (West Sumatra, Riau, Jambi, Riau Islands) Padang City, then the maceration is done in the Microbiology Laboratory of Andalas University Padang City on July 2019 until finished. The Samples on this research were
the colonies of Streptococcus mutans bacteria and lactobacillus acidophilus which obtained from the Laboratory of Andalas University, Padang city and Gajah Mada University and then they were bred at the Microbiology Laboratory of Andalas University Padang city with 4 treatments done and repeated as well 6 times so that the number of the samples were 24 treatments with the precentage of concentration 12.5%, 25%, 50%, and 100% by used one way anova test. The results of the research showed the obtained number of sig 0.000 <0.05, it means that Ha received or it found
the effectiveness of green grapes extracts (Vitis vinifera L) towards the inhibition capacity of Streptococcus mutants bacterium rate growth with best extract 50%, and the number of sig 0.244> 0.05, it means Ha was rejected or did not found the effectiveness of green grapes extracts(Vitis vinifera L) towards the inhibition of Lactobacillus Acidophilus rate growth.