Uji Daya Hambat Ekstrak Tinta Cumi-cumi (Loligo sp) terhadap Pertumbuhan Bakteri Streptococcus mutans

Abstract: Dental caries is still a health problem in Indonesia. There are several factors that play some important roles in the occurence of caries, as follows: microorganism, host, food, and time. Streptococcus mutans is one of the microorganisms that cause caries. Squid ink contains melanin which has an active compound to inhibit microbial activity. This study was aimed to determine the inhibitory effect of squid ink extract (Loligo sp) on the growth of Streptococcus mutans. This was a laboratory experimental study, with a post test only control group design. The results showed that the mean diameter of the inhibitory zones of the squid ink extract (Loligo sp) was 10.50 mm which was categorized as strong inhibition (Davis and Stout criteria). In conclusion, the squid ink extract (Loligo sp) had a strong inhibitory effect on the growth of Streptococcus mutans bacteria.Keywords: squid ink extract (Loligo sp), Streptococcus mutans, zone of inhibitionAbstrak: Karies gigi merupakan salah satu masalah kesehatan gigi dan mulut di Indonesia. Faktor-faktor penyebab karies gigi yaitu mikroba, pejamu, makanan, dan waktu. Salah satu mikroba penyebab karies ialah bakteri Streptococcus mutans. Tinta cumi-cumi mengandung melanin yang memiliki senyawa aktif untuk menghambat aktivitas mikroba. Penelitian ini bertujuan untuk mengetahui daya hambat ekstrak tinta cumi-cumi (Loligo sp) terhadap pertumbuhan bakteri Streptococcus mutans. Jenis penelitian ialah eksperimental laboratorik, dengan post test only control group design. Hasil penelitian menunjukkan diameter rerata zona hambat dari ekstrak tinta cumi-cumi (Loligo sp) sebesar 10,50 mm dan digolongkan dalam kategori kuat (kriteria Davis dan Stout). Simpulan penelitian ini ialah ekstrak tinta cumi-cumi (Loligo sp) memiliki daya hambat yang kuat terhadap pertumbuhan bakteri Streptococcus mutans.Kata kunci: ekstrak tinta cumi-cumi (Loligo Sp), Streptococcus mutans, zona hambat